Military history of Canada

The first conflicts between Europeans and the indigenous peoples may have occurred around 1003 CE, when parties of Norsemen attempted to settle the northeastern coast of North America, like L'Anse aux Meadows.[13] Although relations were initially peaceful, conflict between the Norse and the local First Nations, or Skræling, eventually occurred; with some accounts suggesting the conflict arose due to the Norse refusing to sell weapons to the Skrælings. Regardless, Indigenous bows and clubs were effective weapons against the Norse weaponry, and their canoes provided them greater manoeuvrability in an environment they were familiar with. Being too few in numbers to sustain a war, the Norse abandoned the settlement.[14][15]

The first European-Indigenous engagements to occur in Canada during the Age of Discovery took place during Jacques Cartier's third expedition to the Americas from 1541 to 1542. Between 1577 and 1578, the Inuit engaged in several skirmishes near Baffin Island against English explorers under Martin Frobisher.[15]

Algonquin, French, and Wyandot forces besiege a Mohawk fort during the Battle of Sorel in 1610.

The Beaver Wars were a series of intermittent conflicts from 1609 to 1701, that involved the Iroquois Confederacy, New France, and France's Indigenous allies.[36] By the 17th century, the economies of several First Nations had become interdependent on the regional fur trade with Europeans.[37] The French, having only settled the area in the beginning of the 17th century, quickly joined pre-existing Indigenous alliances, like the Huron-Algonquin alliance, which brought them into conflict with the Iroquois Confederacy.[37][38][39] While the majority of tribes in the region were allies of the French, the Iroquois had become aligned first with Dutch colonizers, and then the English.[40] As a result of these trade relationships, the chief threat to the inhabitants of New France in its early existence came from the Iroquois Confederacy, and particularly from the easternmost Mohawks.[41]

Open conflict between the French and Iroquois broke out likely due to the latter's desire to control the beaver pelt trade.[37] However, some scholars have highlighted the hegemonic ambitions of the Iroquois League as a factor, while others have suggested the conflict were "mourning wars" launched by the Iroquois to capture prisoners to replenish their population in the wake of epidemic afflicting Indigenous peoples in the Americas. Regardless, Iroquois hostilities against the First Nations in the St. Lawrence Valley and the Great Lakes seriously threatened the fur trade and drew the French into the wider conflict.[15]

Iroquois warriors attack an Algonquin fort defended by a Franco-Indigenous force at the Battle of Long Sault, 1660

The French initially only provided modest support to its First Nations allies, supplying them with iron arrowheads and knives, but with few firearms.[15][42] Although Franco-Indigenous forces were successful in early campaigns, the Iroquois were able to reverse the situation with new tactics that integrate their hunting skills and intimate knowledge of the terrain with new firearms acquired from the Dutch.[43] Access to firearms proved decisive, as it enabled the Iroquois to fight a highly effective form of guerrilla war. After the beaver population was extirpated within Iroquois lands, the Iroquois undertook further expansionary campaigns in search of new trapping groups and raided the Algonquin in the Ottawa Valley, as well as the French in the 1630s and 1640s.[37] These attacks led to the dispersal of the Neutral, the Petun, and the Huron Confederacy, as well as the systematic destruction of Huronia.[15][37] The string of Iroquois victories isolated the French from their Algonquin allies in the Laurentian region and left their settlements defenceless. Taking advantage of this, the Iroquois negotiated peace with the French, demanding the French move Jesuits and their soldiers into Iroquois villages to help defend them.[15]

Peace between the Iroquois and the French lasted until 1658 when the French withdrew their missions from Iroquois settlements.[15] Although the Iroquois Confederacy continued their expansionary campaigns in the mid-1650s, the breakout of a wider front in 1659 and 1660 strained the confederacy.[37] To secure a new peace, the French dispatched the Carignan-Salières Regiment in 1665,[15] the first group of uniformed professional soldiers to set foot on what is today Canadian soil, and whose members later formed the core of the Compagnies Franches de la Marine, a local militia.[44] The regiment's arrival prompted the Iroquois nations to agree to peace by 1667.[15]

New France's governor general, Louis de Buade de Frontenac, with First Nations allies, 1690

In the ensuing peace, the French made new alliances with First Nations they encountered further west, most of whom were engaged in conflict with the Iroquois. The French provided these new allies with firearms and encouraged them to attack the Iroquois. The French also cemented its alliance with the Abenaki in Acadia, who were also harassed by the Iroquois. Open conflict with the Iroquois broke out again in the 1680s after the Iroquois attacked French coureurs de bois and the Illinois Confederation, a new ally of France. Franco-Indigenous expeditions were launched against the Iroquois in 1684 and 1687, although only the latter expedition saw some success.[15][45] The Iroquois launched new attacks in 1689, including the Lachine massacre, in support of their English allies during the Nine Years' War and as retaliation for the 1687 expedition.[37] However, after a flurry of raids against the Iroquois from France's western allies, and a Franco-Indigenous expedition led by Governor General Louis de Buade de Frontenac in 1696, the weakened Iroquois opted to negotiate for peace.[37]

The Great Peace of Montreal was signed in 1701 between 39 First Nations, including the Iroquois Confederacy and First Nations allied with France. As a part of the peace terms, the Iroquois agreed to remain neutral in Anglo-French conflicts, in return for trade benefits from the French.[45] These terms undermined the effectiveness of the Covenant Chain between the Iroquois and the English Crown, and the Iroquois' trading relationship with New England.[45] Although the nations of the Iroquois Confederacy managed to expand their territories as a result of the conflict, the expansion did not bring about the prosperity originally envisioned.[37]

In the 17th century, the English and French clashed over their colonial interests, with hostilities between the two first escalated in 1613, when Samuel Argall and his sailors destroyed the French settlement of Port-Royal in a bid to secure the Bay of Fundy fisheries for the English colony of Virginia. Facing little resistance, the settlement was razed.[46]

Samuel de Champlain surrendering Quebec City to David Kirke, 1629

During the Anglo-French War of 1627 to 1629, the English granted a patent to David Kirke to settle Canada and to stage raids against the French in the area. In 1628, forces under Kirke seized a French supply fleet and Tadoussac, and captured Quebec City the following year.[47] As French control of the region diminished due to the conflict, Scottish settlers established settlements in areas seized from the French, including Port-Royal and Baleine. However, the latter settlement was destroyed by French forces two months after its establishment in 1629.[48] In 1630, an Anglo-Scottish force attempted to take one of the last remaining French footholds in Acadia, Fort St. Louis, although the siege were unsuccessful.[49] Settlements seized by the English and Scots were returned to the French after the end of the war in 1632, as a result of the Treaty of Saint-Germain-en-Laye.[47][48]

In the mid-17th century, Acadia was plunged into what some historians have described as a civil war.[50] After the death of Isaac de Razilly, the lieutenant governor of Acadia, in 1635, the French court divided Acadia into two administration. Charles de Menou d'Aulnay governed a portion of Acadia from Port-Royal, while Charles de Saint-Étienne de la Tour governed another portion from present-day Saint John, New Brunswick.[51][52] However, the unclear divisions of administration between the two eventually led to conflict between the two governors.[51]

Françoise-Marie Jacquelin defends Fort Sainte Marie with other supporters of Charles de Saint-Étienne de la Tour during the decisive engagement of the Acadian Civil War in 1645.

In 1640, La Tour attacked d'Aulnay at Port-Royal.[53] In response, d'Aulnay established a five-month blockade of La Tour's fort at Saint John. However, the blockade was defeated in 1643, and La Tour led another attack against Port-Royal.[54] After receiving word that La Tour had left Saint John to meet with supporters in New England, d'Aulney mobilized his forces and captured Saint John after besieging it in April 1645.[55] As a result, Acadia was governed by d'Aulney from 1645 to his death in 1650. He was able to gain favour with the French government after he informed them that La Tour sought aid from the English in New England.[51]

La Tour returned to France shortly after d'Aulney's death and restored his reputation and governorship over Acadia.[54] La Tour governorship over Acadia lasted until 1654 when after years of civil war and decades of neglect from the French court, English forces under Robert Sedgwick seized Acadia.[51] Sedgwick was prompted to seize Acadia to secure its fur and fishing resources for New England and The Protectorate, having received authorization to retaliate against the French for attacks on English vessels by French privateers.[56]

The Second Anglo-Dutch War (1665–1667) was a conflict between England and the Dutch Republic partly for control over the seas and trade routes. In 1664, a year before the Second Anglo-Dutch War began, Michiel de Ruyter received instructions at Málaga on 1 September 1664 to cross the Atlantic to attack English shipping in the West Indies and at the Newfoundland fisheries in reprisal for Robert Holmes capturing several Dutch West India Company trading posts and ships on the West African coast.[57] Sailing north from Martinique in June 1665, De Ruyter proceeded to Newfoundland, capturing English merchant ships and taking the town of St. John's before returning to Europe.[58][59] As a result of the peace treaty that ended the Second Anglo-Dutch War, the English returned the colony of Acadia to the French, which was seized over a decade earlier in 1654.[60]

During the Third Anglo-Dutch War (1672–1674), the inhabitants of St. John's fended off a second Dutch attack in 1673. The city was defended by Christopher Martin, an English merchant captain. Martin landed six cannons from his vessel, Elias Andrews, and constructed an earthen breastwork and battery near Chain Rock commanding the Narrows leading into the harbour.

English and French forces engaged one another in North America during the Nine Years' War (1688–1697), with the North American theatre of the conflict known as King William's War. At the onset of the war, Governor General Frontenac planned an invasion to conquer the Province of New York to isolate the Iroquois. However, the scale of the plan was later reduced. In February 1690, three New French-First Nations military expeditions were sent to New England. One expedition attacked Schenectady, another raided Salmon Falls, while a third besieged Fort Loyal. New France also encouraged its First Nations allies to carry out smaller raids throughout the English American frontier and encouraged scalpings as a form of psychological warfare.[31]

The batteries of Quebec City bombard the English fleet during the Battle of Quebec in 1690.

Having faced several attacks by New France's petite guerre,[61] the English launched two retalitory expeditions against New France.[31] The first was a large naval expedition sent to capture Quebec City in 1690. The expedition was poorly organized and had little time to achieve its objective, having arrived in mid-October, shortly before St. Lawrence would freeze over.[62] The English forces withdrew after a single abortive landing on the Beauport shore to the east of Quebec City.[63] The second English expedition took place in 1691, although they were repulsed at the Battle of La Prairie.[31] Other English attacks in Acadia include the Battle of Chedabucto, the Battle of Port Royal, the raid on Chignecto, and the siege of Fort Nashwaak.[64]

Pierre Le Moyne d'Iberville was called upon to attack the English fishing stations in Newfoundland in the Avalon Peninsula campaign,[65] and to expel the English from the island.[66] Iberville sailed with his three vessels to Plaisance, the French capital of Newfoundland,[66] before setting fire to St John's in November 1696. The expedition subsequently destroyed most of the English fisheries along the eastern shore of Newfoundland, while smaller raiding parties razed and looted remote English hamlets and seized prisoners.[67] By the end of March 1697, only Bonavista and Carbonear remained in English hands. In four months of raids, Iberville destroyed 36 settlements.[68]

The Hudson's Bay Company garrison at York Factory surrendering to French forces following the Battle of Hudson's Bay in 1697.

During the war, the French were also able to secure their control over Hudsons Bay. The French had already seized several Hudson's Bay Company forts in an expedition two years before the war, with York Factory being the last remaining HBC fort on the bay. Three expeditions were launched to capture York Factory, with the first ending failure in 1690. The second expedition captured York Factory in 1694, although it was recaptured by the English months later. York Factory was finally secured by the French after the Battle of Hudson's Bay in 1697.[69]

The war ended in 1697 with the Peace of Ryswick, which required all territorial conquests made during the war to be returned. The HBC was also forced to relinquish all but one fort on Hudson Bay (Fort Albany). The resulting peace saw both the English and French consolidate alliances and trade relations with Indigenous peoples in the area. The Peace of Ryswick also contributed to the eventually negotiated peace of the Beaver Wars in 1701.[70][71]

The English-French conflict merged with a preexisting conflict between the English and the maritime Algonquians; which began shortly before King William's War when the Algonquians attacked several English settlements in response to their encroachment on their territory. The French successfully leveraged Algonquian-Anglo hostilities to their advantage, partly due to the influence of French missionaries and settlers living in Indigenous villages. Peace talks were held in 1693 between the English and maritime Algonquians. However, these talks were sabotaged by the French, who induced their Indigenous allies to continue fighting. The French also encouraged the Abenaki and Mi’kmaq to engage in privateering, with many serving as buccaneers in the French Navy. These privateers took part in the naval battle off St. John and the second siege of Pemaquid in 1696.[31]

Hostilities between the British and the French broke out during the War of Spanish Succession, with the conflict spilling over to their North American colonies. The North American theatre of the conflict, Queen Anne's War (1702–1713), was largely restricted to Acadia and New England, as both the colonies of Canada and New York agreed to informally remain neutral during the conflict. Initially, the French-aligned Abenaki also declared their neutrality in the Anglo-French conflict. However, the English immediately declared hostilities against the Abenaki, drawing them into the conflict as well.[31]

The New England raid on Grand Pré in June 1704. The raid was carried out in retaliation for an earlier New French-First Nations raid on Deerfield.

The war saw Acadians and New Englanders conduct raids against one another. Raids that occurred in Acadia include the raid on Grand Pré in 1704 and the Battle of Bloody Creek in 1711.[76] The raid on Grand Pré was conducted by New England forces in retaliation against a New French-First Nations raid on Deerfield in the British Province of Massachusetts Bay. Other French-First Nations raids in Massachusetts include the raid on Haverhill.[31] The French also attacked Newfoundland, besieging St. John's in 1705, and captured the city after a battle in 1709.[77][78] However, the French suffered a major setback after the British captured the Acadian capital of Port-Royal. The capital was besieged three times during the conflict, having repelled two sieges in 1707 before falling to the British during the third siege of Port-Royal in 1710.[79] Following up on its success in Acadia, in 1711, the British launched the Quebec Expedition to take the colonial capital of New France. However, the expedition was aborted after its fleet was wrecked by the waters of the St. Lawrence River.[77]

In the ensuing Peace of Utrecht, the French were forced to cede significant territory in North America. This included restoring the lands surrounding Hudson's Bay to the HBC and ceding its claims to Newfoundland and Acadia, although it was granted fishing rights off parts of Newfoundland.[80] However, because of a difference in interpretation over the size of Acadia, the French continued to occupy the western portion of the territory (present-day New Brunswick).[81] The French also continued its relationship with the Abenaki and Mi'kmaq in Acadia and encouraged them to attack the British.[31] After the conflict, the French built the Fortress of Louisbourg to protect its remaining Acadian settlements on Île-Royale and Île Saint-Jean,[81] while the British quickly built new outposts to secure its Acadian holdings.[31]

Hostilities between the maritime Algonquians and the British continued after Queen's Anne War, with the Mi’kmaq capturing 40 British vessels between 1715 and 1722.[31][82] In May 1722 Lieutenant Governor John Doucett took 22 Mi'kmaq hostages at Annapolis Royal to prevent the capital from being attacked.[83] In July 1722, the Abenaki and Mi'kmaq created a blockade of Annapolis Royal with the intent of starving the capital.[84] As a result of the escalating conflict, Massachusetts Governor Samuel Shute officially declared war on the Abenaki on July 22, 1722.[85] Early operations of Father Rale's War happened in the Nova Scotia theatre.[86][87] In July 1724, a group of 60 Mi'kmaq and Maliseets raided Annapolis Royal.[88]

The treaty that ended the war marked a significant shift in European relations with the maritime Algonquians. It granted the British the right to settle in traditional Abenaki and Mi'kmaq lands.[31] However, the treaty also marked the first time a European power formally acknowledged that its dominion over Nova Scotia had to be negotiated with the region's indigenous inhabitants. The treaty was invoked as recently as 1999 in the Donald Marshall case.[89]

The French-Mi'kmaq raid on Grand Pré in 1747

British and French forces engaged one another during the War of Austrian Succession, with the North American theatre of the conflict known as King George's War (1744–1748). Although the maritime Algonquians quickly joined the French war effort, many of New France's Indigenous allies in the Great Lakes region were hesitant to join the war, as they wished to maintain their trade relations with the British. The British established these trade relations in the decades before the war, as a deliberate effort to destabilize the Franco-Indigenous alliances in that region.[31]

Throughout the war, Acadians and Canadiens raided frontier settlements in Nova Scotia, New England, and New York.[90] Raids that occurred in Nova Scotia includes the raid on Canso, siege of Annapolis Royal, and the Battle of Grand Pré.[91] French-Mohawk raids into New England and New York includes the raid on Saratoga and the siege of Fort Massachusetts. However, the Mohawk were unwilling to join the French excursions deeper into New York, for fear of coming into conflict with other members of the Iroquois Confederacy.[31]

The British siege of Louisbourg in 1745. The fortress was captured after several weeks.

In 1745, a British-New England force besieiged and captured Louisbourg.[92] However, the British were not able to advance further into New France,[90] with the French repelling a British attack on Île Saint-Jean at the Battle at Port-la-Joye in 1746.[31] However, the capture of Louisbourg was instrumental in damaging Franco-Indigenous alliances in the Great Lakes region, as it effectively cut off Quebec City from France and brought trade to a standstill in the Great Lakes. As a result, the price of goods skyrocketed and the French were unable to continue its annual gifts to secure its Indigenous alliances. Although many Indigenous communities in the Great Lakes were initially sympathetic to the French war effort, this sudden change was viewed by some of France's Indigenous allies as a violation of their alliance; with some Indigenous communities becoming hostile to the French in the latter part of the war.[31] In 1746, the French launched the Duc d'Anville expedition, the largest military expedition to set sail from Europe for the Americas up to that point, to recapture Louisbourg. However, the expedition failed, as it was beset by bad weather, and many of its troops had fallen ill before arriving to Nova Scotia.

The Treaty of Aix-la-Chapelle ended the war in 1748, and returned control of Louisbourg to the French in exchange for some of its wartime territorial gains in the Low Countries and India.[90] The return of Louisbourg to the French outraged New Englanders. In response to the continued French presence around Nova Scotia, the British founded the military settlement of Halifax, and built Citadel Hill in 1749.[93]

The Royal Navy capture of the French ships Alcide and Lys in 1755. The ships were carrying war supplies to the Acadians and Mi'kmaq.

Father Le Loutre's War (1749–1755) was fought in Acadia and Nova Scotia by the British and New Englanders, primarily under the leadership of New England ranger John Gorham and the British officer Charles Lawrence,[94] against the Mi'kmaq and Acadians, who were led by French priest Jean-Louis Le Loutre.[95] After the British established Halifax, the Acadians and Mi'kmaq orchestrated attacks at Chignecto, Grand-Pré, Dartmouth, Canso, Halifax and Country Harbour.[96] The French erected forts at present-day Saint John, Chignecto and Fort Gaspareaux. The British responded by attacking the Mi'kmaq and Acadians at Mirligueche (later known as Lunenburg), Chignecto and St. Croix.[97] The British also established communities in Lunenburg and Lawrencetown. Finally, the British erected forts in Acadian communities at Windsor, Grand-Pré and Chignecto.[98]

Throughout the war, the Mi’kmaq and Acadians attacked the British fortifications of Nova Scotia and the newly established Protestant settlements. They wanted to retard British settlement and buy time for France to implement its Acadian resettlement scheme.[99] The war ended after six years with the defeat of the Mi'kmaq, Acadians and French in the Battle of Fort Beauséjour.[98] During this war, Atlantic Canada witnessed more population movements, more fortification construction, and more troop allocations than ever before in the region.[95] The Acadians and Mi'kmaq left Nova Scotia during the Acadian Exodus for the French colonies of Île Saint-Jean and Île Royale.[100]

The Braddock Expedition defends itself against an ambush by First Nations, Canadien militiamen, and French marines at the Battle of the Monongahela in Ohio Country, 1754.

The final conflict of the French and Indian Wars was the Seven Years' War. Although France and Great Britain were not formally at war until 1756, hostilities between their colonial forces broke out in North America in 1754, in a theatre known as the French and Indian War (1754–1760).[101] Overlapping claims over the Ohio Country between the British and French led the French to build a series of forts near the area in 1753. This in turn led to the breakout of hostilities between the British and French colonies the next year.[102] Most First Nations were quick to lend their support to the French, as many held a negative perception of the British due to their territorial policies in the preceding years. In turn, throughout the war, the British worked to undermine the Franco-Indigenous alliances by encouraging Indigenous neutrality through Iroquois intermediaries. The Iroquois Confederacy itself entered the conflict on the British side at the Battle of Fort Niagara in 1759.[31]

Raid on an Acadian village in Miramichi Bay during the Gulf of St. Lawrence campaign in 1758. The campaign was part of the forced removal of the Acadians from Acadia.

In 1754, the British planned a four-pronged attack against New France, with attacks planned against Fort Niagara on the Niagara River, Fort Saint-Frédéric on Lake Champlain, Fort Duquesne on the Ohio River, and Fort Beauséjour at the border of French-held Acadia. However, the plan fell apart after the armies sent to capture Niagara and Saint-Frédéric abandoned their campaigns, and the Braddock Expedition sent to capture Fort Duquesne was defeated by a New French-First Nations forces at the Battle of the Monongahela.[101][103][104] Although most of the plan had failed, the army sent to Acadia was successful at the Battle of Fort Beauséjour. Following their victory at Beauséjour, the British moved to assert their control over the region, and began to forcibly relocate the majority of the Acadian population from Acadia, beginning with the Bay of Fundy campaign in 1755.[101] The relocations took place to neutralize the Acadian's potential military threat, and to interrupt the vital supply lines to Louisbourg.[105] Throughout the war, over 12,000 Acadians were removed from Acadia.[106]

In 1756, shortly after a formal state of war was declared between the British and French, the French commander-in-chief of New France, Pierre de Rigaud, marquis de Vaudreuil-Cavagnial, created a military strategy aimed at keeping the British on the defensive and far away from the populated part of New France, the colony of Canada. To achieve this, the military of New France undertook a series of offensive operations, including an attack on Fort Oswego and the siege of Fort William Henry, while Canadian militia and First Nations raiding parties were dispatched against frontier settlements in British America. The use of a small French army, aided by militiamen and First Nations allies successfully tied down British forces to their colonial frontier and forced the British to send 20,000 more soldiers to reinforce its North American colonies. Although the French experienced early success, they were unable to build upon it — as the majority of their army was already committed to the European theatre of the war and were unable to reinforce New France.[101]

The British burn the French warship Prudent and capture Bienfaisant during the 1758 siege of Louisbourg

In 1758, the British launched a new offensive against New France. An initial invasion force of 15,000 soldiers was repelled at the Battle of Carillon, by a force of 3,800 French regulars and militiamen.[107] However, the French suffered several major setbacks in the following months, with the British capturing Louisbourg after a month-long siege of the fortress in June–July 1758, and the British destroying the French supply stock for its western posts at the Battle of Fort Frontenac in August 1758.[101][108] During that time, the French were also forced to retreat from Fort Duquesne, after some of their First Nations allies established a separate peace agreement with the British.[101]

Following these victories, the British launched three campaigns against Canada, the first two targeted Niagara and Lake Champlain, while the third targeted Quebec City. After the latter invasion force was repelled by the French at the Battle of Beauport, the British commander, Major-General James Wolfe opted to besiege Quebec City. The three-month siege culminated with the Battle of the Plains of Abraham in September 1759, in which the French general, Louis-Joseph de Montcalm, marched out of the walls of Quebec City with a numerically inferior force to fight the British in a pitched battle. The French were defeated, with both Wolfe and Montcalm having been killed as a result of the battle.[109][110]

Surrender of the French Army in Montreal in 1760. The British conquest of New France was complete after the fall of Montreal.

After Montcalm's death, command of the French Army was handed to François Gaston de Lévis. In April 1760, de Lévis launched a new campaign to retake Quebec City. After de Lévis defeated the British at the Battle of Sainte-Foy, the British fell back to the walls of Quebec City. The French besieged the city until May, when a British naval force defeated a French naval element supporting the siege at the Battle of Pointe-aux-Trembles.[111] With the arrival of the British Royal Navy, New France was virtually isolated from France and could not be reinforced.[101] As a result, the remaining French Army retired to Montreal, and on 8 September 1760, signed the Articles of Capitulation of Montreal. The capitulation marked the completion of the British conquest of New France and the end of the North American theatre of the Seven Years' War.[112] The British made peace with the Seven Nations of Canada a week later. France's maritime Algonquian allies made peace with the British in 1761.[31]

British naval power was a deciding factor in the outcome of the war, playing a crucial role in the capture of Louisbourg and Quebec City, and preventing French reinforcements from reaching the colony. As a result, the French were forced to cede large swathes of territory in the Treaty of Paris of 1763, including New France. Although the British were victorious, the war also provided the British with a colossal national debt. The absence of the French military in North America had also emboldened residents of the Thirteen Colonies, who no longer needed to rely on the British for military protection.[101]

Although the Seven Years' War ended, rumours of a First Nations offensive in the British frontier persisted in 1763. An alliance of First Nations under Odawa chief Pontiac was formed to drive the British from the Great Lakes and Ohio Country. The alliance was forced to lay siege to Fort Detroit when the British were alerted of their activities. The siege prompted other First Nations aligned with Odawa to attack British forts and settlements in the region.[113] During the conflict, a battalion of 300 French Canadians led by former Troupes de la Marines was raised and dispatched to Fort Detroit as a part of Brigadier-General John Bradstreet's expedition.[114] Despite achieving several victories, the resistance lost momentum after Pontiac failed to capture Fort Detroit.[101] The restoration of the traditional distribution of presents and the Royal Proclamation of 1763 led to the conclusion of peace. The proclamation created the Province of Quebec and the Indian Reserve while granting First Nations various land rights.[101][113] These measures were implemented to protect the First Nations and enable the peaceful and "gradual settlement" of the frontier. However, these measures inadvertently led to the British to assume the role previously held by France, as a barrier against the territorial expansion of the Thirteen Colonies.[113]

Members of the British 84th Regiment of Foot in Nova Scotia. The regiment was raised in the Canadian colonies for service during the American Revolutionary War.

After the Seven Years' War, the Thirteen Colonies became restive over several taxes imposed by the British Parliament, with many questioning its necessity when they no longer needed to pay for a large military force to counter the French.[115] American frustrations were further exacerbated after the Quebec Act was passed, and Catholic rights in the Province of Quebec were restored, much to the ire of the anti-Catholic Protestant-based Thirteen Colonies. The act also enlarged Quebec to include portions of the Indian Reserve that the British colonies of Pennsylvania and Virginia had long coveted, like the Ohio Country.[116] These tensions led to a political revolution in the Thirteen Colonies, and eventually, the American Revolutionary War (1775–1776), with American rebels aiming to break free from the British parliament, and assert their claim on the Ohio Country.[117]

At the onset of the war, the majority of the common people in Quebec and the Maritime colonies were neutral and reluctant to take up arms against the Americans or the British.[118] Revolutionaries launched a propaganda campaign in the Canadian colonies early in the war to elicit support, although it only attracted limited support. Similarly, the British saw limited success in raising a militia to defend Quebec, although they were able to rely on the French Canadian clergy, landowners, and other leading citizens for support.[116] The British were also supported by the Seven Nations of Canada and the Iroquois Confederacy, although the latter attempted to maintain its neutrality due to an ongoing civil war within the confederacy.[113]

British regulars and Canadian militia shatter the American column in fierce street fighting in the Battle of Quebec in 1775.

In September 1775, the American forces launched the invasion of Quebec, beginning with the capture of Fort Ticonderoga and the siege of Fort St. Jean. The latter siege, which took place outside Montreal, prompted the governor of Quebec, Guy Carleton, to abandon the city and flee to Quebec City. The Continental Army advanced towards Quebec City and met up with Benedict Arnold's expedition outside the city. On New Year's Eve, the combined American force attacked Quebec City, although it was repulsed.[116][119] After the failed assault, the Americans maintained a siege against the city until spring 1776, when the besieging force was routed by a British naval force sent to relieve Quebec. The Americans abandoned Montreal shortly afterwards, and its remaining forces in Quebec were defeated at the Battle of Trois-Rivières in June 1776. British forces under General John Burgoyne pursued the Americans out of Quebec in a counter-invasion against New York.[116]

Although the Canadien militia constituted most of Quebec City's defenders during the invasion, it saw little expeditionary action outside Quebec; with the British uncertain if the militia would remain loyal if they encountered the French Army.[114] However, several British colonial auxiliary units were raised in the Canadian colonies, like the Royal Fencible American Regiment and the 84th Regiment of Foot. The latter served throughout the Canadian colonies and the Thirteen Colonies. From 1778 to the war's end, British First Nations allies under Thayendanegea also conducted a series against New York border settlements.[113]

The American raid on Lunenburg in 1782. During the war, coastal communities in Nova Scotia were subject to raids by American privateers.

New Englanders also attacked Nova Scotia in the hopes of sparking a revolt there, although they were defeated at the battles of Fort Cumberland in 1776 and St. John in 1777.[116][120] Although the revolutionaries were unable to spark a revolt, Nova Scotia remained a target of American privateering throughout the war, with nearly every important coastal outpost having been attacked.[116] Attacks like the 1782 raid on Lunenburg had a devastating effect on the colony's coastal maritime economy.[121][122][123] In total, American privateers captured 225 vessels either leaving or arriving at a Nova Scotian ports.[124] The French Navy also attacked a British naval convoy off Nova Scotia, during the Action of 21 July 1781.[125] Conversely, the British captured numerous American privateers off the coast of Nova Scotia, like the battle off Halifax in 1782, and used the colony as a staging ground to launch attacks against New England, like the Battle of Machias.[126]

The revolutionaries' failure to capture the Canadian colonies and the continued allegiance to Britain from its colonists resulted in the breakup of Britain's North American empire.[127] Although the British successfully defended Quebec and Nova Scotia, their military failures in the Thirteen Colonies resulted in their military surrender in 1781, and the subsequent recognition of the independent US republic in the Treaty of Paris of 1783.[128] The Treaty of Paris in 1783 led to a reduction in the territorial size of the Province of Quebec, with the cession of the Indian Reserve south of the Great Lakes to the United States.

The emergence of a powerful neighbour fuelled suspicions in the Canadian colonies against the US for decades. Over 75,000 or 15 per cent of Loyalists–residents in the Thirteen Colonies who supported the Crown–moved north to the remaining portions of British North America.[116][128][129] As the Iroquois' traditional territory was ceded by the British to the Americans in the peace, the British offered the Iroquois land in Quebec, hoping these new Iroquois communities would provide an active barrier against American expansion.[113]

In 1796, during the War of the First Coalition, a series of fleet manoeuvres and amphibious landings took place in Newfoundland. The French expedition included seven ships of the line and three frigates under Rear-Admiral Joseph de Richery. The French were accompanied by a Spanish squadron of 10 ships of the line under General Jose Solano y Bote. The combined fleet sailed from Rota, Spain, with the Spanish squadron accompanying the French to ward off the British squadron that blockaded the French in the city earlier that year. The Newfoundland expedition was the last portion of Richery's expedition before he returned to France. Sighting of the combined naval squadron prompted defensives to be prepared at St. John's, Newfoundland in August 1796.[130] Seeing these defences, Richery opted to not attack the defended capital, instead moving south to raid the undefended settlements, fishing stations and vessels, and a garrison base at Placentia Bay.[130] After the raids on Newfoundland, the squadron was split up, with half moving on to raid neighbouring Saint Pierre and Miquelon, while the other half moved to intercept the seasonal fishing fleets off the coast of Labrador.

The surrender of a US garrison at Fort Detroit, after British regulars, Canadian militiamen, and First Nation warriors besieged the fort in 1812

Animosity and suspicion persisted between the UK and the US in the decades after the American Revolution.[132] The Napoleonic Wars exacerbated Anglo-American tensions, as British wartime measures against France aggravated the US. Such policies include trade restrictions imposed on neutral ships to France, and the impressment of sailors from American vessels the British claimed were deserters.[133] As the US did not have a navy capable of challenging the Royal Navy, an invasion of Canada was proposed as a feasible means of attacking the British.[132] Americans on the western frontier also hoped an invasion would bring an end to British support of Indigenous resistance in the American Northwest Territory.[132] Intrigued by Major General Henry Dearborn's the analysis that the invasion would be easy, and supported by the congressional war hawks, US President James Madison declared war against the UK in June 1812, beginning the War of 1812 (1812–1815).[133]

American war plans focused on a poorly defended Upper Canada, as opposed to the well-defended Maritime colonies and geographically remote Lower Canada and its fortified capital of Quebec City. However, some prewar preparations were made in Upper Canada due to the foresight of its lieutenant general, Major-General Isaac Brock.[133] At the onset of the war, Upper Canada was defended by 1,600 regulars, allied First Nations, and several Canadian units raised for the war like the Provincial Marine, Fencibles, and militia units like Captain Runchey's Company of Coloured Men.[133][134]

"Push on, brave York Volunteers!" A mortally wounded General Brock urges the York Militia forward during the Battle of Queenston Heights, 1812.[135]

Believing a bold attack was needed to galvanize the local population and First Nations to defend the colony, Brock quickly organized a British-First Nations siege on Fort Mackinac.[133] In August 1812, a force under Brock moved towards Amherstburg to repel an American army that had crossed into Upper Canada, although the Americans had retreated to Detroit by the time Brock arrived.[132] Their retreat allowed Brock to secure an alliance with Shawnee chief Tecumseh, and provided him with an excuse to abandon his previous orders to maintain a defensive posture within Upper Canada.[136] Detroit was then besieged and captured by a British-First Nations force, providing them control over the Michigan Territory and the Upper Mississippi.[137][138][139] In October 1812, a British-First Nations force repelled another American army that had crossed over the Niagara River at the Battle of Queenston Heights, although the following battle resulted in the death of Brock.[140][141] A third American army assembled to retake Detroit in late 1812, although after it was defeated at the Battle of Frenchtown in January 1813, ending the threat of any further American attacks that winter.[133]

Although Brock's offensives led to early success, his death resulted in a shift in British strategy, with Governor General George Prevost maintaining a more defensive posture to conserve his forces. As a result, the British maintained their strongest garrisons in Lower Canada and only reinforced Upper Canada when additional troops arrived from overseas.[133]

Loyalist Laura Secord warns the British of an impending American attack on Beaver Dams, 1813.

Unlike in 1812, the US had better success with its initial campaigns in 1813. In April, the Americans defeated the British at the Battle of York, briefly occupying and razing parts of the Upper Canadian capital. The US naval force that captured York later moved onto Fort George and captured it on 27 May. However, as the retreating British were not immediately pursued, they were able to regroup and eventually defeat the American force sent against them at the battles of Stoney Creek and Beaver Dams. The American force fell back across the Niagara River in December, after setting Fort George and Niagara ablaze. In retaliation, the British razed large parts of Buffalo during the Battle of Buffalo and continued such actions into 1814, including the burning of Washington.[133][142]

The death of Tecumseh by US forces during the Battle of Moraviantown in October 1813.

Although the British were successful in defending the Niagara Peninsula in 1813, they saw several major setbacks in the western frontier that year. The British-First Nations force besieging Fort Meigs were unable to capture the stronghold, and the British later lost control over the Upper Great Lakes as a result of the Battle of Lake Erie.[133] After the naval loss at Lake Erie, the British-First Nations forces in the American Northwest Territory were forced to retreat, although they were pursued and eventually routed at the Battle of Moraviantown.[143] The battle resulted in the death of Tecumseh, which effectively dissolved Tecumseh's confederacy and the alliance with the British.[144] However, the US were unable to follow up on this victory, as the American militiamen that pursued the British-First Nations force to Moraviantown needed to return to their farms for harvest.[133]

In late 1813, the Americans also sent two armies to invade Lower Canada. A British-First Nations force turned back a larger American force at the Battle of the Chateauguay in October 1813. The next month, a British force repelled another American army during the Battle of Crysler's Farm.[133][145]

The last incursions into the Canadas occurred in 1814. In July, US forces crossed over the Niagara River and captured Fort Erie. The American advance culminated in the Battle of Lundy's Lane. Although the battle ended in a stalemate, the Americans were effectively spent and were forced to retire to Fort Erie. The Americans successfully repelled a British siege of the fort, although the exhausted Americans fell back to the US shortly after, effectively ending the conflict in the Canadas.[133]

HMS St Lawrence, a first-rate ship of the line launched in September 1814. The St Lawrence provided the British an advantage in the latter stages for the battle for Lake Ontario.

The British regained the initiative in 1814, reclaiming control of Lake Huron after several engagements on the lake,[133] and gaining effective control of Lake Ontario in September with the launch of HMS St Lawrence, a first-rate warship that served as a deterrent against American naval action for the remainder of the war.[146] As the War of the Sixth Coalition drew to a close, the British began to reorient its focus on its war with the US. Lower Canada and Nova Scotia were used as staging grounds for invasions. The force that gathered in Lower Canada invaded northern New York, although they were repulsed at the Battle of Plattsburgh in September. The force that assembled in Halifax had better success, capturing most of Maine's coastline by mid-September.[133]

Throughout the war, communities in Nova Scotia purchased and built privateer ships to attack US shipping.[147] The Liverpool Packet was a notable privateering vessel from Liverpool, Nova Scotia, credited with capturing 50 ships during the war.[148] American naval prisoners of war, including the captives from the capture of USS Chesapeake, were imprisoned at Deadman's Island, Halifax.[149]

The Treaty of Ghent was signed on 24 December 1814, ending the conflict and restoring the status quo between the US and the UK. However, sporadic fighting continued into 1815, in areas that had not received news of the peace. The war helped provide the Canadian colonies with a sense of community and laid the groundwork for Canada's future nationhood.[133] Neither side of the war can claim total victory, as neither had completely achieved their war aims.[150] However, historians agree that the First Nations were the "losers" of the conflict, given the collapse of the Tecumseh's confederacy after his death in 1813, and the British dropping its proposal for a First Nations buffer state in the midwestern US during the peace negotiations.[151]

The Battle of Seven Oaks in 1816, fought between Hudson's Bay Company officials and Métis voyageurs trading with the North West Company

In 1812, the Red River Colony was established by the Hudson's Bay Company, despite opposition from the North West Company (NWC), which had already operated a trading post in the area, Fort Gibraltar. In January 1814, the Pemmican Proclamation was issued by the colony, prohibiting the export of pemmican and other provisions from the region for a year to ensure its survival and growth. The NWC and local Métis voyageurs who regularly traded with the NWC opposed the ban, viewing it as a ploy by the HBC to control the foodstuff of NWC traders.[152]

In June 1815, Metis leader and NWC clerk Cuthbert Grant established a camp with his followers south of the colony and began harassing and stealing the supplies of the Red River settlement. In response, the HBC seized Fort Gibraltar from the NWC in March 1816, to stem the local pemmican trade. In June 1816, HBC officials confronted Métis and First Nations voyageurs delivering pemmicans to the NWC, which resulted in the brief Battle of Seven Oaks. After the confrontation, Grant briefly took control of the area, while the HBC and the Red River settlers temporarily retreated to Norway House. HBC control over the area was restored when Thomas Douglas, 5th Earl of Selkirk arrived in August with 90 soldiers.[152]

A steam engine moving stones up the promontory of Quebec for the construction of the Citadelle of Quebec, 1827

Fear of an American invasion of the Canadas remained a serious concern for at least the next half-century and was the chief reason for the retention of a large British garrison in the colony.[153] From the 1820s to the 1840s, the British undertook extensive works on fortifications to create strong points around which defending forces can centre in the event of an invasion. Works on major defence fortifications by the British in this period include the citadal and ramparts in Quebec City, Fort Henry in Kingston, and the Imperial fortress of Halifax.[153] The Rideau Canal was also built to allow ships to travel a more northerly route from Montreal to Kingston in wartime,[154] bypassing the St. Lawrence River, a waterway that also served as the border with the US.[154]

However, by the 1850s, fears of an American invasion had diminished and the British felt able to start reducing the size of their garrison. The Canadian–American Reciprocity Treaty of 1854 further helped to alleviate concerns.[155]

The 100th (Prince of Wales's Royal Canadian) Regiment of Foot receiving their regimental colours from Albert Edward, Prince of Wales, 1859

A form of compulsory military service was practiced in the Canadas during the 19th century, with the practice being instituted in Lower Canada in 1803, and in Upper Canada in 1808.[156] This sedentary militia was made up of the colony's male inhabitants aged 16 to 60, and was mobilized only in emergencies. In peacetime, compulsory service in the sedentary militia was limited to a one to two-day annual muster parade.[157][158] The British Army levied and recruited from the local population to form new units or to replace individuals lost to enemy action, sickness, or desertion. Instances where the British levied from the local population to serve as Fencibles or in the Canadian militia, include the War of 1812, the Rebellions of 1837–1838, the Fenian Raids, and the Wolseley expedition.[159]

The British Army also raised several infantry regiments in their Canadian colonies including the 40th Regiment of Foot, the 100th (Prince of Wales's Royal Canadian) Regiment of Foot, and the Royal Canadian Rifle Regiment.

Several Canadians fought in the Crimean War as members of the British military, with the Welsford-Parker Monument in Halifax being the only Crimean War monument in North America.[160] The first Canadian Victoria Cross recipient, Alexander Roberts Dunn, was awarded the medal for his actions during the Charge of the Light Brigade.[161] During the Indian Rebellion of 1857, William Nelson Hall became the first Black Nova Scotian to receive the medal, having been awarded it for his actions at the Siege of Lucknow.[162][163]

Depiction of the Battle of Saint-Eustache in 1837, a decisive engagement during the first uprising of the Lower Canada Rebellion.

Two armed uprisings broke out from 1837 to 1838 in the Canadas.[164] Calls for responsible government, and an economic depression in Lower Canada in the 1830s led to protest rallies and eventually, calls for armed insurrection from the more radical Patriote movement. An uprising eventually broke out in Lower Canada in November 1837 and was the more serious and violent insurgency of the Rebellions of 1837–1838.[165] The second armed rising in the Canadas broke out several weeks after the initial uprising in Lower Canada, with its leaders being inspired by the events in Lower Canada.[166]

The first insurrection in Lower Canada broke out in November 1837. British regulars and the Canadian militia fought Patriote rebels in a series of skirmishes including the Battle of Saint-Denis, Battle of Saint-Charles, and the Battle of Saint-Eustache.[167] The disorganized rebels were defeated, although its leadership escaped to the US. Amid this initial defeat, several anglophone militias looted and burned French Canadian settlements. A second uprising in Lower Canada was launched in November 1838 with the assistance of American volunteers. However, like the first uprising, it was poorly organized and quickly put down. During the Lower Canada Rebellion, 325 people died, the majority of whom were rebels. The British recorded 27 dead.[166]

The Battle of Montgomery's Tavern on 5 December 1837, the first confrontation of the Upper Canada Rebellion

The Upper Canada Rebellion was led by William Lyon Mackenzie. Mackenzie's followers were made up primarily of farmers of American origin, who were disgruntled over the preferential treatment given to British settlers in the colony's land grant system.[168] The first confrontation took place at the Battle of Montgomery's Tavern in Toronto on 5 December 1837. Most rebels dispersed after the battle, although a small group remained until Loyalists and Black Loyalists militias moved against the tavern three days later. On 14 January, Mackenzie seized Navy Island and declared it the Republic of Canada, although he was forced to flee to the US after Canadian volunteers burned the rebel ship Caroline. Three people died during the Upper Canada Rebellion, two rebels and one loyalist.[166] For the rest of 1838, Mackenzie's followers and sympathizers from the US conducted a series of raids against Upper Canada known as the Patriot War.

The rebellions prompted the creation of the Durham Report, which recommended uniting the Canadas. Upper and Lower Canada were united to form the Province of Canada after the Act of Union 1840 was proclaimed in 1841; which in turn led to the introduction of responsible government in 1848.[166]

The influx of gold prospectors into the Fraser Canyon during the Fraser Canyon Gold Rush resulted in several conflicts between the prospectors and local First Nations. The Fraser Canyon War in 1858 was a conflict at the onset of the gold rush between the Nlaka’pamux and the prospectors. The Nlaka’pamux attacked several newly arrived American prospectors in defence of their territory, which led to the prospectors forming military companies to carry out reprisal attacks in turn. Responding to the violence, the British formed the colony of British Columbia on 2 August and sent gunboats to the Fraser River to reestablish order. However, as British military capabilities were limited on the Pacific coast, they were unable to quickly assert control, resulting in open conflict to break out on 9 August. A truce was reached between the two sides after a peace council on 21 August. A British contingent arrived at the end of the month to secure the area. Approximately 36 Nlakaʼpamux died during the conflict, including five chiefs.[169]

Another conflict broke out in April 1864, known as the Chilcotin War. In that month, the Tsilhqot’in killed 21 prospectors and construction workers that had crossed into their territory. These attacks led to a month-long armed standoff in the British Columbia Interior after an armed group, made up mostly of newly arrived American prospectors, marched out from the colonial capital of New Westminster to put down the resistance in the Crown's name. The conflict ended after a Tsilhqot’in peace delegation was mistakenly arrested. Six members of the delegation were convicted and hanged for murder, having participated in the attacks. The Tsilhqot’in maintained their actions were an act of war and not murder. In 2018, the Canadian government exonerated the six individuals and issued an apology to the Tsilhqot'in, recognizing "that they acted in accordance with their laws and traditions" for war.[170]

Anderson Ruffin Abbott in 1863. Abbott was one of many Canadians who volunteered with the Union Army during the American Civil War.

The British Empire declared its neutrality in the American Civil War (1861–1865) at its onset, although the colonies of British North America sold weapons to both sides of the war. Although some Canadian newspapers sympathized with the Confederate States of America, as its victory aligned with colonial "security interests", the large majority of the 40,000 Canadians who volunteered to fight in the civil war did so with the Union Army.[171][172] Most Canadian fought as volunteers, although some were bribed or tricked into service by American recruiters or "crimpers". By the end of the war, 29 Canadian Union Army officers were awarded the Medal of Honor.[172]

Although the Empire was neutral, several incidents related to the conflict, like the Trent affair and the Chesapeake affair, led to the deterioration of Anglo-American relations.[173] The former was the most serious incident to take place in the war, occurring in 1861 after a US gunboat stopped the RMS Trent to remove two Confederate officials bound for the UK.[174] The British demanded an apology and the release of the passengers. War appeared imminent in the months after, with the British taking steps to reinforce its North American garrison from 4,000 to 18,000 soldiers.[174] However, the crisis subsided after an apology was issued.[172] The Empire was also heavily criticized by Americans for being complicit in its subjects engaging in blockade running of weapons to the Confederacy, including its subjects in Canada. Blockade runners undermined the Union Navy's blockade of the Confederacy; one historian said that they lengthened the conflict by two years.[173][175][176]

When the Union Army regained the initiative in 1863, Confederate President Jefferson Davis dispatched Jacob Thompson to create a northern front from Canada. With Confederate activities in the colony being tolerated by a large portion of Canadian authorities and citizens,[177] Thompson set up bases in Montreal and Toronto with plans to raid prison camps and free Confederates prisoners, as well as attack Union ships in the Great Lakes. In 1864, Confederate raiders from Montreal launched the St. Albans Raid in Vermont, although they were chased back by local defenders to the Canadian border, where the British intervened and arrested the Confederate raiders.[172]

Volunteers of the Canadian militia who were mobilized during the Fenian raids in June 1866.

In the mid-1860s, Irish American veterans of the Union Army who were members of the Fenian Brotherhood, supported raiding British North America to coerce the British to accept Irish independence.[178][179][180][181] The Fenians had incorrectly assumed Irish Canadians would support their invasive efforts politically and militarily. However, most Irish settlers in Canada West at that time were Protestants of mostly either Anglo-Irish or Ulster-Scots descent, and for the most part loyal to the Crown.[178] Nonetheless, the threat was significant enough that in 1865, British and Canadian agents in the US were directed refocus their efforts from Confederate sympathizers to the Fenians. After it became clear the Fenians were planning an attack, 10,000 volunteers of the Canadian militia were mobilized in 1866. The number of mobilized troops was later raised to 14,000, then 20,000.[182]

The first raid occurred in April 1866, when Fenians landed at Campobello Island and razed several buildings. On 2 June, the Fenians conducted their largest raid, the Battle of Ridgeway, where 750–800 Fenians repelled a force of nearly 900 Canadian militiamen, largely owing to the inexperience of the latter. However, the Fenians withdrew to the US shortly after the battle, expecting the arrival of further British and Canadian reinforcements. In the same month, another raiding party of 200 Fenians was defeated near Pigeon Hill.[182]

Members of the 50th Canadian Battalion engage the Fenians at the Battle of Eccles Hill in 1870

The threat of another raid in 1870 led the government to mobilize 13,000 volunteers. A raiding party of 600 Fenians was defeated in May 1870 during the Battle of Eccles Hill. Another raiding party was launched two days after Eccles Hill, although it was defeated at the Battle of Trout River. The last raid took place in October 1871, when 40 Fenians occupied a customs house near the Manitoba-Minnesota border, hoping to elicit the support of Louis Riel and the Métis. However, Riel raised volunteers to defend the settlement against the Fenians. The US Army later arrived and arrested the Fenians there.[182] By the 1870s, the US was not prepared to risk war with the UK and intervened when the Fenians threatened to endanger American neutrality.[183]

Although the militia was able to prevent the Fenians from accomplishing its goals, the raids revealed shortfalls in its leadership, structure, and training. This prompted several reforms in the militia in the years after the raids.[182]

By the mid-1860s, the colonies of British North America faced increasing pressure to take up their own defences from the British, who were looking to alleviate themselves of the defence expenses for British North America so they can reposition its soldiers to more strategic regions. Pressure from the British, as well as the ensuing American Civil War, prompted the various colonies to consider uniting into a single federation. Although some questioned the need to unite after the American Civil War ended in 1865, subsequent raids by the Fenian Brotherhood made most people in British North America in favour of Canadian Confederation, which eventually occurred in 1867.[172][184]

Departure of British forces from Quebec City in 1871. British forces withdrew from most of Canada in 1871, several years after Confederation.

Americans grievances against the British for transgressions that took place during the American Civil War also became an issue in 1869, when the US demanded payment for damages from said transgressions. A British delegation including Canadian prime minister, John A. Macdonald was sent to Washington to negotiate a settlement, resulting in the Treaty of Washington in 1871.[172] With most of the British North American colonies joining Canadian confederation, and American grievances having been settled by 1871, the majority of the British forces withdrew from Canada that year, save for Halifax and Esquimalt, where British garrisons of the Pacific and North America and West Indies Station remained in place for reasons of imperial strategy.[185] The Royal Navy also continued to provide for Canada's maritime defence, and it was understood that the British would send aid in the event of an emergency.[186]

Enlistment of Canadians in the British military continued after Confederation and the withdrawal of the British Army from the country in 1871. Several Canadians who wanted to pursue overseas military service chose to enlist with the British military instead of joining the Canadian militia, whose command had little interest in expeditionary combat.[187] The British Army also specifically targeted Canadians for recruitment to replenish certain units, like the 100th Regiment of Foot.[159] Canadians continued to join the British Army's enlisted ranks into the First World War, with several thousand Canadians serving with British units during that conflict.[188]

The first graduating class of the Royal Military College of Canada in 1878. Graduates of the college were recruited into the British military and the Canadian militia in the 19th century.

The British War Office also maintained officer's commissions specifically for Canadian "gentlemen and journeymen" to fill vacancies and replenish the British officer corps.[189] The recruitment of Canadians into the British officer corps was encouraged by the War Office as a way to promote military interoperability between Canada and the UK, and to make the Canadian government more amicable towards the idea of permitting its military to participate in British expeditionary campaigns overseas.[190] By 1892, approximately two out of three graduates of the Royal Military College of Canada (RMC) who received a commission choose to join the British military as opposed to the Canadian militia.[191]

By the end of the 19th century, RMC graduates in the British military had taken part in 27 campaigns in Africa, Burma, India, and China.[192] From 1880 to 1918, approximately a quarter of all RMC graduates took up a commission with the British military.[188] Recruitment of RMC officer cadets into the British military declined in the early 20th century due to efforts by Frederick William Borden, the Canadian minister of militia and defence from 1896 to 1911. In the following three years after Borden's tenure as minister, over half of all graduates who opted to pursue a military career chose to join the Canadian militia instead of the British military.[189]

Uniforms used by the Canadian Militia in the late 19th century.

By the mid-19th century, the militia system in the Province of Canada was organized into two classes, sedentary and Active.[193] The sedentary militia, later known as the "Reserve Militia", was the traditional compulsory militia force mobilized only in emergencies;[157][158] while the Active Militia was initially made up of volunteer service battalions that performed transport and operational duties.[193]

The Militia Act of 1855 reformed the Active Militia from a unpaid voluntary service to a paid part-time service made up of three components, the "Volunteer Militia", the "Regular Militia", and the "Marine Militia". The Volunteer Militia was made up of artillery, cavalry and infantry units. The Regular Militia was made up of former serving men, who in the event of an emergency, can be balloted for service. The Marine Militia were people employed to navigate Canada's waterways.[157] Debate over whether the colony should rely on a compulsory or volunteer service took place in 1862, after proposed legislation aimed to strengthen and develop the sedentary militia. After the 1863 general election, a new Militia Act was passed which threw the burden of the defence of the colony on the Active Militia, but still retained the sedentary militia.[193][156] The Militia Act of 1868 was later passed by the new Canadian federation, largely based on the 1855 Act.[156] Following the departure of the British Army in 1871, the Canadian militia shouldered the main responsibility for Canada's defence.[157]

Members of the Yukon Field Force in Vancouver in 1898. The Yukon Field Force was a garrison of the Active Militia's Permanent Force.

The Active Militia became more professionalized in the 1870s and 1880s. In 1871, two professional artillery batteries were created within the Active Militia.[194] The Active Militia further expanded through the Militia Act of 1883, with the authorization of a new troop of cavalry, another artillery battery, and three infantry companies.[157] These were intended to provide the professional backbone of the Permanent Force, a full-time "continuous service" component of the Active Militia.[157][194][195] Although the Active Militia's professional components were expanded in the 1870s and 1880s, its marine component had largely vanished, with the last marine militia unit being disbanded in 1878.[157] The sedentary militia also fell into disuse during this period, with annual musters becoming increasingly sporadic. By 1883, the sedentary militia was virtually non-existent, and the requirement to hold an annual muster stricken from legislation.[156]

During the Mahdist War in 1884, the British requested aid from Canada for skilled boatmen to assist Major-General Charles Gordon's besieged forces in Khartoum.[196] However, the government was reluctant to comply, resulting in Governor General Lord Lansdowne to send only a private force of 386 voyageurs under the command of Canadian militia officers.[197] This force, known as the Nile Voyageurs, served in Sudan and became the first Canadian force to serve outside North America.[198]

The Nile Expedition travelling by boat to relieve the siege of Khartoum

Arriving in Asyut during October 1884, the voyageurs transported 5,000 British troops upstream along the Nile to Khartoum with wooden whaling boats. The flotilla reached the city two days after its capture by Mahdist forces. Canadian militia officers overseeing the voyageurs took part in the Battle of Kirbekan weeks later, although the voyageurs themselves did not partake. After Kirbekan, the expedition was ordered to withdraw to Egypt. The expedition left Egypt in April 1885.[199] Sixteen members of the Canadian contingent died during the campaign.[198]

In October 1870, one of the last major battles between the Blackfoot Confederacy and the Cree took place near present-day Lethbridge, when a Cree war party engaged a Piikani Nation camp at the Battle of the Belly River. The Cree war party was defeated, as they did not realize the members of the Kainai Nation and Piegan Blackfeet were also at the camp. The Blackfoot's use of revolving rifles may have also contributed to their victory.[200] However their victory was pyrrhic, as their losses made them vulnerable to attack. Both sides lost as many as 300 warriors during the battle.[201]

The Wolseley expedition near Kakabeka Falls. The British-Canadian military expedition was undertaken in 1870 to retake Upper Fort Garry.

In the late 19th century, Louis Riel led two separate resistances against the Canadian government. These resistances occurred during a period when the Canadian government was pursuing the settlement of western Canada, and the signing of land transfer treaties between several First Nations and the Crown.

The first resistance led by Riel, the Red River Rebellion (1869–1870), occurred in the months before the 1870 transfer of Rupert's Land from the Hudson's Bay Company to Canada. In December 1869, Riel and other Métis settlers of the Red River Colony seized Upper Fort Garry to negotiate favourable terms for the colony's entry into Canadian confederation.[202] After an English-speaking settler was executed, a military expedition made up of 400 British regulars and 800 Canadian militiamen was organized to retake the fort.[202][203] Fearing arrest, Riel and his co-conspirators fled to the US before the expedition arrived in August 1870. Although its leaders fled to the US, the resistance was successful in achieving its major objectives, with the federal government recognizing the rights of the Red River settlers through the establishment of the province of Manitoba.[202]

The Battle of Batoche in 1885 was a decisive engagement during the North-West Rebellion where Canadian soldiers defeated a force of indigenous and Métis people.

In 1884, Riel returned from the US and began to rally local Métis in the North-West Territories to press their grievances against the Canadian government. In March 1885, an armed force of Métis formed the Provisional Government of Saskatchewan, with Riel as its president. A five-month insurgency, known as the North-West Rebellion, began later that month after a Métis force defeated a contingent from the North-West Mounted Police (NWMP) at the Battle of Duck Lake. The Métis victory at Duck Lake emboldened the Plains Cree under Big Bear, who attacked Battleford, Frog Lake, and Fort Pitt.[204][205]

In response, the Canadian government mobilized 3,000 militiamen for service to put down the resistance.[206] Although General Frederick Middleton intended for the 3,000-person force to move together by rail, the attacks at Battleford and Frog Lake prompted him to send a 900-person force ahead of the main contingent. However, after this forward force was repelled at the Battle of Fish Creek, Middleton opted to wait for the rest of the contingent, before laying a successful siege against Riel's outnumbered forces at the Battle of Batoche.[205][207] Although Riel was captured at Batoche in May, resistance from Big Bear's followers continued until 3 June at the Battle of Loon Lake.[205] Canadian militia and NWMP casualties during the conflict include 58 killed and 93 wounded.[208]

Injured Canadian soldiers and a nursing sister in South Africa during the Second Boer War, 1901.

The issue of Canadian military participation in British imperial campaigns arose again during the Second Boer War (1899–1902).[209] After the British requested assistance from Canada for its war in South Africa, the Conservative Party was adamantly in favour of dispatching 8,000 soldiers.[210] English Canadian were also overwhelmingly in favour of participation.[211] However, near-universal opposition to joining the war effort came from French Canadians and several other groups.[211] This split the governing Liberal Party, as it relied on both pro-imperial Anglo-Canadians and anti-imperial Franco-Canadians for support. Although Prime Minister Wilfrid Laurier sought compromise and was concerned about Anglo-French tensions,[212] he was intimidated by his imperial cabinet to commit a token force of 1,000 soldiers of the 2nd Battalion, Royal Canadian Regiment of Infantry.[212][213]

Two additional contingents were later dispatched to South Africa. The second contingent was made up of 6,000 volunteers from three artillery batteries and two mounted regiments, Royal Canadian Dragoons and the 1st Regiment, Canadian Mounted Rifles. The third contingent was made up of the Strathcona's Horse, a unit entirely funded by The Lord Strathcona and Mount Royal.[214] By the end of 1902, the Canadian Mounted Rifles had raised six regiments for service in South Africa. In addition to Canadian military units, several Canadians also served with the British Army's South African Constabulary.[215]

The unveiling of the Toronto South African War Memorial in 1908.

The Canadian forces missed the early period of the war, including the British defeats of Black Week. Canadian units in South Africa won much acclaim after they led the final night attack at the Battle of Paardeberg that resulted in the Boers' surrender; one of the first decisive victories of the war for the Empire.[215][216] At the Battle of Leliefontein in November 1900, three members Royal Canadian Dragoons were awarded the Victoria Cross for protecting the rear of a retreating force,[217] and was the only time a Canadian unit was awarded three Victoria Crosses in a single action.[218] One of the last major engagements of the war involving Canadian units was the Battle of Hart's River in March 1902.[215] During the conflict, Canadian forces also participated in maintaining British-run concentration camps that resulted in the deaths of thousands of Boer civilians.[219]

Approximately 8,600 Canadians volunteered for service during the Boer War.[220] About 7,400 Canadians,[221] including 12 nursing sisters, served in South Africa.[215][222] Of these, 224 died, 252 were wounded, and five were awarded the Victoria Cross.[215][223] A wave of celebrations swept the country after the war, with many towns erecting their first public war memorials in commemoration of the war. However, the public debate over Canada's role in the war also damaged relations between English and French Canadians.[215]

An exhibit of infantry equipment used by the Canadian Militia, c. 1900s

Discussions over reforming the Canadian Militia into a full-fledged professional army emerged during the Second Boer War.[224] The last British Army General Officer Commanding the Canadian Militia, Lord Dundonald, instituted a series of reforms in which Canada gained its own technical and support branches.[225] This included the Engineer Corps (1903), Signalling Corps (1903), Service Corps (1903), Ordnance Stores Corps (1903), Corps of Guides (1903), Medical Corps (1904), Staff Clerks (1905), and Army Pay Corps (1906).[226] Additional corps would be created in the years before and during the First World War, including the first separate military dental corps.[227]

The turn of the century also saw Canada take further control of its defences. In 1904, a new Militia Act was passed which replaced the British officer in charge of the Canadian militia with a Canadian Chief of the General Staff,[157] and the British military handed over control of the Imperial fortress of Halifax and Esquimalt Royal Navy Dockyard to Canada in 1906.[228] The Militia Act of 1904 also formally recognized the disuse of the sedentary Reserve Militia by removing the formal provision that made male inhabitants of military age as members of the sedentary Reserve Militia, and replaced it with a provision that only theoretically made them "liable to serve in the militia".[156]

HMCS Rainbow in Vancouver, shortly after its recommissioning with the Canadian Naval Service in 1910.

Canada had a small fishing protection force attached to the Department of Marine and Fisheries but relied on the UK for maritime protection. As the British became further embroiled in a naval arms race with Germany, in 1908, it asked the colonies to assist with Imperial naval strategy.[229] The Conservative Party argued that Canada should merely contribute money to the purchase and upkeep of some Royal Navy vessels.[229] Some French Canadian nationalists felt that no aid should be sent, while others advocated establishing an independent Canadian navy that could provide aid to the British in times of need.[229]

Eventually, Prime Minister Laurier decided to follow this compromise position, and the Canadian Naval Service was created in 1910 and designated as the Royal Canadian Navy (RCN) in August 1911.[230] To appease imperialists, the Naval Service Act included a provision that in case of emergency, the fleet could be turned over to the British.[231] This provision led to the strenuous opposition to the bill by Quebec nationalist Henri Bourassa.[232] The bill set a goal of building a navy composed of five cruisers and six destroyers.[232] The first two ships were Niobe and Rainbow, somewhat aged and outdated vessels purchased from the British.[233] With the election of the Conservatives in 1911, in part because the Liberals had lost support in Quebec, the navy was starved for funds, but it was greatly expanded during the First World War.[234]

A postcard from Canada from 1918 encouraging the purchase of Victory Bonds. The postcard depicts a soldier standing in a poppy field and includes a line from the war poem "In Flanders Fields".

On August 5, 1914, the British Empire, including Canada, entered the First World War (1914–1918) as a part of the Entente powers.[235][236] As a dominion of the Empire, the Canadian government had control over what the country would provide for the war effort.[235] Military spending rose considerably in Canada during the war. To alleviate the financial burden, income taxes were introduced, and Victory Loan campaigns were organized to raise funds. Canada also sold munitions to the British due to the Shell Crisis of 1915, with the Imperial Munitions Board being established to coordinate the industry.[236]

Canada's contribution to the war was significant, given its population of eight million. A total of 619,636 people served in the Canadian military during the war. Of those, 59,544 were killed and 154,361 were wounded[236][224] As a result of the conflict, Canada was provided with a greater degree of autonomy within the British Empire, and a modest diplomatic presence in the Paris Peace Conference.[236] The increased autonomy, and increased public hesitancy to participate in further imperial conflicts contributed towards the Canadian government decision to decline the British request for military aid during the Chanak Crisis in 1922.[236][237]

The Canadian Militia was not mobilized and instead, an independent Canadian Expeditionary Force (CEF) was raised for overseas service.[238] The CEF included infantry battalions and the Canadian Cavalry Brigade. However, the militia was tasked with handling the recruitment and enlistment process for the CEF. Canada also formed the Canadian Forestry Corps, a division that harvested wood in France and Scotland for the war effort.[236]

Canadian forces repelling a German attack after a German poison attack during the Battle of Kitcheners' Wood, an engagement during the Second Battle of Ypres in April 1915.

The first Canadian contingent of soldiers was dispatched to Europe on October 3, 1914.[236] The first major engagement Canadians took part in was the Second Battle of Ypres from April–May 1915. At Ypres, Canadian soldiers repelled the first mass poison gas attack in modern history, holding a tactically important section of the front line during the gas attack until reinforcements arrived.[239] In September 1915, several months after Ypres, the Canadian Corps was formed from the CEF with the arrival of the 2nd Canadian Division in France.[240] The corps was expanded by the addition of the 3rd Canadian Division in December 1915 and the 4th Canadian Division in August 1916.[240] A 5th Canadian Division was organized in February 1917, although it never fully formed, and was broken up in February 1918, with its men used to reinforce the other four divisions.[240]

In the first half of 1916, Canadian divisions took part in several local actions, including the Actions of St Eloi Craters, and the Battle of Mont Sorrel. The British Somme Offensive began on July 1, where on its first day, the Royal Newfoundland Regiment was annihilated at the Battle of Albert. Canadian divisions were deployed in the Somme in August 1916.[236] After the Somme Offensive, there was considerable pressure among Canadian leaders for the corps to fight as a unit rather than being spread out with various British units.[240] The four divisions of the Canadian Corps were finally grouped together to take Vimy Ridge. After weeks of preparation and bombardment, the Canadians took the ridge in five days in the Battle of Vimy Ridge, an early stage engagement of the Battle of Arras.[236]

Canadian soldiers advance up a road during the Battle of Cambrai in 1918

Shortly after Vimy Ridge, Canadian Lieutenant-General Arthur Currie was assigned as the new corps commander. Currie went on to lead the corps during the Battle of Hill 70 and the Battle of Passchendaele in 1917.[236] In 1918, the corps was dispatched to Amiens to reinforce the lines and participate in the Hundred Days Offensive. In the later stages of the war, the corps were among the most effective and respected of the military formations on the Western Front.[224] During this three-month period, the Canadian Corps fought in a series of engagements, including the Battle of Amiens and the Battle of Cambrai.[236] The corps' significant drive east from Amiens on 8 August to Mons by the Armistice of 11 November 1918, has been called Canada's Hundred Days.[241][242]

Throughout the war, the Royal Canadian Navy participated in the Atlantic U-boat campaign, primarily providing coastal submarine patrols.[236] Canada also suffered from several maritime disasters. The Halifax Explosion occurred on December 6, 1917, when a ship collision involving a munition ship loaded with explosives caused one of the largest human-made explosions before the detonation of the first atomic bomb in 1945. The resulting disaster saw 11,000 casualties, including 2,000 dead, and wiped out the entire north end of the city.[243] In June 1918, HMHS Llandovery Castle was sunk by a U-boat. In terms of the number of dead, the sinking was the most significant Canadian naval disaster of the war.[244]

Billy Bishop in a Nieuport 17. Bishop was the war's top flying ace from Canada and the British Empire.

In addition to the Canadian military, Canadians also served with British military forces, like the Royal Navy and the Royal Flying Corps. By the end of the war, nearly a quarter of all the pilots in the Royal Flying Corps were Canadian, including the British Empire's top flying ace, Billy Bishop.[236]

Although there was an initial wave of enthusiastic volunteers in 1914, by 1916, enthusiasm to enlist waned.[236] At the 1917 Imperial War Cabinet, the British implored its dominions to provide more troops to alleviate shortages stemming from the dissolution of the Russian Empire and the French Army mutinies.[236] Borden, who wished to maintain the continuity of Canada's military contribution, campaigned for conscription in the 1917 Canadian federal election,[245] which became a divisive national topic of debate.[246]

The election was won by Borden's Unionist Party, a coalition made up of pro-conscription Conservatives and Liberals, who subsequently passed the Military Service Act, 1917. However, a number of exemptions from service had to be added to get the act passed by the Canadian parliament. As a result, after conscription went into effect in 1918, of the over 400,000 people who were called upon for conscription, 380,510 people appealed it. By the end of the war, only 24,132 conscripts were sent to Europe to join the CEF.[236] The adoption of conscription saw mixed reactions, with English Canadians being in favour of conscription, while French Canadians;[247] and some English-speaking farmers, trade union leaders, pacifists, and Indigenous leaders were opposed to it.[236] The resulting Conscription Crisis of 1917 did much to highlight the divisions between English and French Canada.[248]

Edward VIII unveiling the Mother of Canada on the Vimy Memorial in 1936. The memorial was dedicated to CEF personnel killed during World War I.

The war's impact on Canadian society resulted in the construction of a number of war memorials in Canada. Proposals for a national memorial were made in 1923, but work did not begin until the 1930s. The Canadian National War Memorial was completed in 1933 and unveiled in Ottawa in 1939.[249] The monument has since been used to commemorate Canadian war dead for other conflicts.[249] There are also eight memorials in France and Belgium to honour Canada's war dead from World War I.[250]

Separate war memorials exist to commemorate the actions of Newfoundland soldiers (at the time a separate British dominion) during the war. The largest of these memorials are the Beaumont-Hamel Newfoundland Memorial in France and the Newfoundland National War Memorial in St. John's.[251]

Following the end of the First World War, the Canadian Expeditionary Force was disbanded, and its lineage was perpetuated through Canadian militia after the latter's reorganization. In 1921, the Active Militia was also reorganized, with Permanent Force becoming the Permanent Active Militia, and the Active Militia's military reserve component becoming the Non-Permanent Active Militia. An officers' roll for the sedentary Reserve Militia was also maintained, although the Reserve Militia itself remained unorganized. In 1922, the National Defence Act was passed, bringing together the Department of Militia and Defence, and the air and naval service portfolio under a single Department of National Defence.[157]

A Canadian officer with Finnish officers of the Murmansk Legion during the north Russia intervention in 1918

Acceding to the British request for aid, the Canadian government dispatched nearly 6,000 soldiers to assist the Allied intervention in the Russian Civil War in mid-1918.[252][253] Approximately 4,200 soldiers were assigned to the Canadian Siberian Expeditionary Force (CSEF), a contingent based in the Russian Far East city of Vladivostok. Another Canadian contingent was dispatched as a part of the larger Allied North Russian Expeditionary Force in northwest Russia, near the ports of Arkhangelsk and Murmansk.[254]

Troops of the Canadian Siberian Expeditionary Force with a truck, 1919

In May 1918, the British War Office requested that Canada provide officers for administrative and instructional duties in northwest Russia. A small volunteer party was dispatched to Murmansk as a part of a larger Allied contingent in June.[255] Further requests for aid resulted in the 16th Canadian Field Artillery being deployed to Arkhangelsk,[256] and CSEF to Vladivostok in October.[254] With the end of the First World War in November, the continued military commitment in Russia became a topic of debate in the King's Privy Council for Canada. A decision was reached to continue the military commitment until the spring of 1919, although it was insisted that the use of Canadian forces could only occur with the express consent of the Canadian government.[254]

Some Canadians saw combat in northwest Russia and as pilots over the Black Sea.[252] However, Canadian troops attached to CSEF in Vladivostok — the majority of Canadian soldiers in Russia — saw little combat before they withdrew.[257] CSEF soldiers began their withdrawal from Russia in April 1919.[254] The 16th Canadian Field Artillery Brigade withdrew from northwest Russia in June 1919.[258] 21 Canadians died during the Allied intervention in Russia, the majority from disease or accidents.[254]

The Canadian Air Force of 1918 at RAF Upper Heyford, with Sopwith Dolphins as part of the No. 1 Fighter Squadron

The First World War was the catalyst for the formation of Canada's air force. At the outbreak of war, there was no independent Canadian air force, although many Canadians flew with the British Royal Flying Corps and the Royal Naval Air Service.[259] In 1914 the Canadian government authorized the formation of the Canadian Aviation Corps.[260] The corps was to accompany the Canadian Expeditionary Force to Europe and consisted of one aircraft, a Burgess-Dunne.[261] The Canadian Aviation Corps was disbanded in 1915.[262] A second attempt at forming a Canadian air force was made in 1918 when a Canadian bomber and fight squadron was created by the British Air Ministry in Europe. The Canadian government took control of the two squadrons by forming the Canadian Air Force.[263] This air force, however, never saw service and was completely disbanded by 1921.[263]

During the 1920s the British government encouraged Canada to institute a peacetime air force by providing several surplus aircraft. In 1920 a new Canadian Air Force (CAF) directed by the Air Board was formed as a part-time or militia service providing flying refresher training.[264] After a reorganization the CAF became responsible for all flying operations in Canada, including civil aviation. Air Board and CAF civil flying responsibilities were handled by the Royal Canadian Air Force (RCAF) after its creation in April 1924.[260] The Second World War would see the RCAF become a truly military service.[260]

The Ikka Machine Gun Company of the Mackenzie-Papineau Battalion, c. 1937–38

The Canadian government did not officially become involved in the Spanish Civil War (1936–1939). However, over 1,500 Canadians volunteered to fight for the Spanish Republican faction. Most volunteers were recent immigrants, members of the Communist Party of Canada, or were forced into a relief camp.[265] Canadian volunteers initially joined the British Battalion, the Abraham Lincoln Battalion or the George Washington Battalion; with approximately 40 Canadians having served in the latter two battalions.[265][266] In July 1937, a unit for Canadian volunteers in the Republican faction was mustered into the XV International Brigade.[265][267] The Canadian unit, the Mackenzie-Papineau Battalion, fought in five major campaigns, including the Battle of Teruel, the Aragon Offensive, and the Battle of the Ebro.[265][268] Approximately 400 to 721 Canadian volunteers died during the war.[265][269]

Wait for Me, Daddy, taken Claude P. Dettloff, in October 1940. The photo depicts the British Columbia Regiment (Duke of Connaught's Own Rifles), marching to embark onto SS Princess Joan.

The Second World War (1939–1945) began on September 1, 1939, with Nazi Germany's invasion of Poland. The Canadian declaration of war on Germany was issued on September 10, several days after the British and French.[270] Although Canada was a major contributor to the war, it took no major part in its higher planning, with Prime Minister William Lyon Mackenzie King making no attempts to partake in it. The government initially envisaged Canada's contribution to be limited in size. However, the idea of a limited effort was abandoned after the German invasion of Belgium and France, with Canada increasing its military spending, the size of its armed forces, as well as introduce conscription for home defence by June 1940.[271] Like the First World War, conscription for overseas service was a divisive issue, with some English Canadians supporting it and French Canadians opposing it.[272] The issue came to head during the Conscription Crisis of 1944 when Mackenzie King was pressured to accept conscription for overseas service from his conscriptionist cabinet members.[271]

Hostilities came to end in September 1945. Canada participated in the Paris Peace Treaties of 1947, and signed peace treaties with Finland, Italy, Hungary, and Romania. In 1951, Canada issued a royal proclamation to end the state of war with Germany, and signed the Treaty of San Francisco to end it with Japan.[271] Of a population of approximately 11.5 million, 1.1 million Canadians served with the Canadian military during the war. More than 45,000 died, and another 55,000 were wounded.[273]

Canadian soldiers on exercise in Hong Kong prior to the Japanese invasion of the colony in 1941

The Canadian Militia (reorganized into the Canadian Army in 1940)[274] saw limited action in the initial phase of the war, with the 1st Canadian Division only briefly deploying with the Second British Expeditionary Force during the fall of France. By 1940, several Canadian units were deployed to the UK to defend it against German attack. After the British abandoned most of their equipment at the Battle of Dunkirk, the 1st Canadian Division was one of the few military formations left in the UK that were completely intact in terms of equipment and manpower.[275][276] In December 1941, two Canadian battalions known as C Force took part in the Battle of Hong Kong,[277] while the 2nd Canadian Division led the Dieppe Raid in August 1942.[278] In the same year, the First Canadian Army was formed and spent most of its time training for an invasion of northwest Europe in the UK[279]

In July 1943, the 1st Canadian Division and the 5th Canadian Division were heavily engaged in the Allied invasion of Sicily, as a part of the British Eighth Army.[280] The Canadians also partook in the Allied invasion of Italy, and saw particularly severe fighting during the Battle of Ortona and the Moro River Campaign.[281] In the spring of 1944, Canadian forces under Lieutenant-General E. L. M. Burns played a leading role in breaking through the Hitler Line. By 1944, the corps broke through the Gothic Line after battles like the Battle of Rimini. There were 92,757 Canadian soldiers that served in the Italian campaign, of whom 5,764 died.[271]

A landing craft with the Royal Winnipeg Rifles heads for Juno Beach during the Normandy landings in June 1944

The Canadian Army also took part in Operation Overlord, which began on June 6, 1944. During the Normandy landings, the 3rd Canadian Division and the 2nd Canadian Armoured Brigade secured Juno Beach.[282] Canadian airborne troops also landed earlier in the day behind the beaches.[283] The Canadians played a leading role in the breakout from the Normandy bridgehead with the capture of Falaise pocket. After the breakout, the First Canadian Army cleared coastal fortress in campaigns like Operation Astonia.[271] From October to November, the Canadians fought a series of battles to secure the Scheldt River and open Antwerp to Allied shipping.[284]

In early 1945, Canadian units fought in the Siegfried Line campaign to clear a path to the Rhine River, preparing it for further Allied offensives on the far side of the Rhine.[285] After the campaign, the First Canadian Army took part in the liberation of the Netherlands and the Western Allied invasion of Germany.[286] When the German Instrument of Surrender was signed on May 5, the II Canadian Corps had taken Oldenburg. Approximately 237,000 Canadian soldiers served in North West Europe campaign in 1944 and 1945, among whom 11,336 died.[271]

Royal Canadian Navy sailors man a gun aboard HMCS Assiniboine, while escorting an HX convoy to the UK

During the war, the Royal Canadian Navy grew significantly in size, with 471 combat ships, 99,688 men and some 6,500 women serving in the navy by the war's end.[271] The navy was tasked with protecting supply and troop convoys from U-boat wolfpacks in the Battle of the Atlantic.[287] RCN warships are credited with sinking 33 enemy submarines during the war. After the Atlantic Convoy Conference in March 1943, the Canadian Northwest Atlantic Command was set up to coordinate Allied convoys north of New York City and was placed under the command of Rear-Admiral Leonard W. Murray.[271] In addition to the Atlantic campaign, RCN warships also took part in the Dunkirk evacuation, the Allied landing in North Africa, and the Normandy landings.[271][288] During the war, the navy lost 24 warships, the largest of which was HMCS Athabaskan, a Tribal-class destroyer.[271] One RCN warship, the light cruiser HMCS Uganda, also participated in the Pacific War as a part of the British Pacific Fleet.[289] In addition to the RCN, many Canadians also served with the Canadian Merchant Navy.[290]

The Royal Canadian Air Force also contributed to the war effort. However, early overseas commitments by the RCAF were hampered by the management of the British Commonwealth Air Training Plan (BCATP), a British Empire-wide pilot training program.[271] Although Canada had agreed to host the majority of BCATP's facilities and finance three-quarters of its costs, the British had expected BCATP graduates to move on to the British Royal Air Force (RAF). However, Mackenzie King's intervention saw some Canadian BCATP graduates move on as members of the RCAF.[291] Because of this early dynamic though, a large number of Canadian BCATP graduates served in RAF units like No. 242 (Canadian) Squadron RAF,[276] as opposed to an RCAF unit.[271] At its peak, there were 107 schools and 184 ancillary BCATP units across Canada. By the end of 1945, 131,553 pilots graduated from BCATP in Canada and flew with either the RAF, RCAF or with another British Commonwealth and Allied air force.[291]

Pilots of No. 1 Squadron RCAF in the UK, October 1940. The squadron was deployed to the UK in June 1940, shortly before the Battle of Britain.

Although the BCATP delayed the development of overseas RCAF units, by the end of the war there were 48 RCAF squadrons stationed abroad. RCAF squadrons partook in the Battle of Britain,[292] and the Combined Bomber Offensive over the European theatre.[271] By the war's end, Canadian airmen were present in every major theatre of war, from North Africa, Italy, northwest Europe, and the Pacific.[293] RCAF squadrons based in Canada were also active during the war, partaking in the Aleutian Islands campaign and conducting anti-submarine operations in the Atlantic. During the war, 232,632 men and 17,030 women served in the RCAF, of which, 17,101 died.[271] By the end of the war, the RCAF was the fourth-largest allied air force.[294]

Members of the Royal Canadian Air Force Women's Division. During the Second World War, women were recruited into the military to fill non-combat roles.

In contrast to the First World War, Canadian industries in the Second World War produced a variety of war materials, including small arms, warships, aircraft and other vehicles; of which, a total of 815,729 were built. Over half of all war material produced in Canada was sent to the UK, with the Canadian government arranging for the Billion Dollar Gift package to help the UK finance those acquisitions. Canadian financial assistance to the UK during the war amounted to $3.043 billion. The demand for labour saw many women enter the workforce for the first time, taking jobs vacated by enlisted men.[271] The Canadian Women's Army Corps and the RCAF Women's Division were also formed relieve male military members for front-line duties.[295]

During the war, Canada aided British and American efforts in the development of the atomic bomb. In 1942, Canada and the UK formed a nuclear research partnership, as the British needed to relocate its Tube Alloys nuclear research program to a safer location with an abundance of resources; resulting in the Montreal Laboratory.[296] In the same year, the Canadian government purchased the Eldorado Mine to mine uranium.[271] The British and Americans agreed to cooperate on nuclear weapons development during the First Quebec Conference in 1943, and the Montreal Laboratory was absorbed into the Manhattan Project.[296]

A map depicting the early warning systems for North America. Three early-warning radar lines in Canada were built during the 1950s to detect incoming Soviet bombers heading for the continent.

The Cold War (1946-1991) began shortly after the end of World War II and is typically attributed to the 1945 defection of Igor Gouzenko, a Soviet cipher clerk working in Ottawa.[297] This led to "PROFUNC", a classified Canadian government program to identify and detain communist sympathizers from 1950 to 1983.[298] As a founding member of NATO and a signatory to the NORAD treaty with the United States, Canada committed itself to the alliance against the Communist bloc.[299] During the 1950s, Canada joined with the Americans to erect defences against Soviet attack, such as the Pinetree Line, Mid-Canada Line, and the DEW Line.[300] As a middle power, Canada recognized its military limitations and embraced a policy of multilateralism. This policy led to Canada's military contributions being contingent on being part of a multilateral coalition.[301] This led to Canada choosing to stay out of several wars despite the participation of close allies, like the Vietnam War.[302]

When the Korean War (1950–1953) broke out, Canada was an early supporter of forming the United Nations military force to liberate South Korea.[303] Canadian military personnel that served in Korea was part of the larger British Commonwealth Forces Korea.[304] Canada's initially contributed three Royal Canadian Navy destroyers and a Royal Canadian Air Force military transport squadron, the No. 426 Squadron RCAF, to assist with the war effort.[303][305] Eight RCN vessels would eventually take turns serving in Korean waters, either protecting the UN fleet or conducting onshore operations.[303] Twenty-two RCAF fighter pilots also flew jet aircraft on exchange duty with the United States Air Force in Korea.[303][306]

Two snipers of Princess Patricia's Canadian Light Infantry in Korea during the Korean War.

The Canadian Army had to spend several months mobilizing its forces back to wartime strength after it went through a period of rapid demilitarization after World War II.[307] Mounting domestic pressure for a larger commitment led to the Canadian Army to form Special Force (later renamed the 25th Canadian Infantry Brigade) for service in Korea.[303] The first Canadian Army units arrived in Korea in December 1950, having arrived after the early campaigns of the war and when the attrition phase of the conflict was beginning.[303][308] For army units, the war was described as a "war of patrols" in rough, mountainous terrain. However, the Canadian Army also participated in several heavier engagements including the Battle of Kapyong and the Battle of Kowang-san.[303]

Canada sent 26,791 troops to fight in Korea.[309] There were 1,558 Canadian casualties, including 516 dead.[310] Hostilities ceased as a result of the 1953 Korean Armistice Agreement.[311] After the armistice, Canada maintained a garrison in the region to patrol the Korean Demilitarized Zone. The garrison was maintained until 1955, with the last Canadian soldiers under the United Nations Command leaving the region in 1957.[303]

Members of the 27th Canadian Infantry Brigade, a brigade created for service in West Germany, disembarks in Rotterdam, 1951

The Cold War was the first time the Canadian military stationed units abroad during peacetime. The Canadian Army and Royal Canadian Air Force maintained a contingent in Western Europe from the early 1950s to 1993. Approximately 100,000 members of the Canadian military served in France and West Germany during the Cold War. The army's and air force's contingent was known as Canadian Forces Europe.[312]

As a part of Canada's commitment to NATO, the 27th Canadian Infantry Brigade (later named 4 Combat Group and 4 Canadian Mechanized Brigade) was formed for service in West Germany.[313] The brigade was initially composed of 6,700 soldiers organized into several units, including three infantry battalions, an armoured regiment, a reconnaissance squadron, an antitank company, an artillery regiment, and a surface-to-surface battery equipped with MGR-1 Honest John nuclear missiles. However, after a defence review in 1970, the brigade had lost its nuclear capabilities, and its size was scaled back. In 1977, the brigade was reassigned from its frontline role as a part of the British commitment in northern Germany to the rear area reserve force supporting American and German forces in southern Germany. In addition to the mechanized infantry brigade, the Canadian Army also provided two infantry battalion groups to Allied Command Europe Mobile Force in 1964, to help secure the alliance's northern and southern flanks. However, by the late 1960s, only one battalion was provided to the quick reaction force.[312]

Two RCAF CF-100 Canucks from RCAF Station Grostenquin fly over Sardinia in 1962

Canada also formed the 1 Air Division in 1951, to meet Canada's air defence commitments for NATO.[314] The air division was initially headquartered in Metz, and was made up of two wings in France, and another two in Germany. Originally a day/all-weather interceptor division, its role was changed to nuclear strike and reconnaissance in 1962, and again in 1966 to only reconnaissance. RCAF assets in France were also relocated to Germany in 1966 due to the French withdrawal from NATO.[312]

The army and air force also formed the Canadian Air-Sea Transportable Brigade Group (CAST), a 5,000-person "at-home" brigade that was formed in 1968 to support Canadian commitments in Europe. Although it was stationed in Canada, the brigade was supposed to have the capability to deploy to Norway with 30 days' notice. CAST only deployed once to Norway for a military exercise in 1986, before it was disbanded in 1989.[312]

Emblem of the Canadian Armed Forces, formed in 1968. The emblem incorporates symbols of the three branches that make up the CAF.

The unification of Canada's military was explored as early as the 1930s. Several elements were unified by the 1940s and 1950s, including its military colleges, and some administrative elements.[315] Full unification of the military was pursued in the 1960s under national defence minister, Paul Hellyer, who believed it would prevent inefficient duplication of services, and cut costs.[316][317] In 1964, the National Defence Act was amended to restructure the three services under a new unified command structure, replacing the three service chiefs with one Chief of the Defence Staff. With the enactment of the Canadian Forces Reorganization Act 1968, the three services ceased to exist as separate entities and became branches of the Canadian Armed Forces (CAF).[315]

Hellyer's attempts to unify Canada's military were only partially successful. Although support services and headquarter commands were fully unified, and the consolidation of some services to cut costs was praised; other changes, like the unification of ranking structure and service uniforms, made the process unpopular with certain members of the public and service members in the CAF. As a result of continued opposition to unification from the army, air force, and navy, by 2014, many of the changes introduced by Hellyer were reversed.[315]

A soldier in Montreal during the October Crisis in 1970. The crisis was triggered after government officials were abducted by the Front de libération du Québec.

The October Crisis was triggered by the kidnapping of two government officials by Montreal-based Front de libération du Québec (FLQ) terror cells in October 1970.[318] On 15 October, five days after the second kidnapping, the government of Quebec requested military assistance under the National Defence Act, with soldiers being deployed at key points in Montreal within hours.[318][319] The next day, the federal government invoked the War Measures Act to confront the "apprehended insurrection", the only time it was invoked in peacetime.[318][320]

As a result of the War Measures Act, the FLQ was outlawed and civil liberties were suspended. The deployment of troops in Quebec continued until January 1971. By the end of the crisis, 12,500 Canadian Forces troops were deployed throughout Quebec, with 7,500 troops stationed in the Montreal area.[321][322] The federal government's use of the War Measures Act was controversial, as the majority of those arrested were unjustly detained. This partly contributed to the War Measures Act's replacement with the more limited Emergencies Act in 1988.[318][319]

Officially, Canada was a "non-belligerent" throughout the Vietnam War (1955–1975), serving as an "impartial and objective peacekeeper" on two international truce commissions, the International Control Commission and the International Commission of Control and Supervision.[323] Because of this, the Canadian military's involvement in Vietnam was limited to a small contingent in 1973 to help enforce the Paris Peace Accords.[324] However, Canadian diplomats provided tacit support for US counterinsurgency and espionage efforts in Vietnam. Canadian diplomats later argued its partisan efforts were to counterbalance the activities of Eastern bloc countries who were also members of the truce commissions.[325] During the war, Canadian firms sold at least $12.5 billion of war material to the US, including machinery, munitions, clothing and food, and raw materials. Testing of Agent Orange, a tactical herbicide used in Vietnam, also took place in Canada.[325]

Throughout the conflict, Canada also saw an influx of American Vietnam War resisters in Canada, with approximately 20,000 draft dodgers and 12,000 military deserters seeking refuge in Canada from military service in Vietnam.[325] In a counter-current to the movement of American draft dodgers and deserters to Canada, approximately 20,000 Canadians volunteered with the United States Armed Forces to fight in southeast Asia.[326] Between 110 and 134 Canadians died during the conflict.[325][327] Seven remain listed as missing in action.[327]

During the 1990s, the Canadian Armed Forces responded to several international crises as a part of a multinational force, as well as deployed within Canada to provide aid during natural disasters.

Domestically, the Forces deployed over 8,500 military personnel to Manitoba after the 1997 Red River flood to help with evacuation, building dikes, and other flood-fighting efforts;[328] over 16,000 to provide relief in New Brunswick, Ontario and Quebec after the North American ice storm of 1998; and over 2,600 soldiers to provide forest fire relief in British Columbia as a part of Operation Peregrine in 2003.[329] The Forces' deployment for the 1998 ice storm was the largest deployment of troops ever to serve on Canadian soil in response to a natural disaster,[330] and the largest operational deployment of Canadian military personnel since the Korean War.[331]

Two civilian members of the Sûreté du Québec stand in front of a Canadian Forces-operated AVGP, during the Oka Crisis in September 1990

The Oka Crisis was a land dispute between a group of Mohawk people and the town of Oka in southern Quebec, which began on July 11, 1990, and lasted until September 26. On August 8, Quebec premier Robert Bourassa announced that he had invoked Section 275 of the National Defence Act to requisition military support in "aid of the civil power",[332] a right available to provincial governments that was invoked after one police officer and two Mohawk were killed during the conflict.[333] The Chief of the Defence Staff, General John de Chastelain placed Quebec-based troops in support of the provincial authorities. During Operation Salon, 2,500 regular and reserve troops were mobilized.[334] Troops and mechanized equipment mobilized at staging areas around Oka and Montreal, while reconnaissance aircraft staged air photo missions over Mohawk territory to gather intelligence.[333] Despite high tensions between military and First Nations forces, no shots were exchanged. On September 1, freelance photographer Shaney Komulainen took a photograph of men staring each other down. Entitled Face to Face, it has become one of Canada's most famous images.[335]

HMCS Protecteur supporting coalition forces during the Gulf War

Canada had condemned the Iraqi invasion of Kuwait and quickly agreed to join the US-led coalition.[336] Over 5,100 Canadian military personnel served in the war. At its peak, 2,700 personnel were in the region at one time. Canadian Forces operations were coordinated under Operation Friction. The Gulf War was the first conflict where female members of the Canadian Armed Forces served in combat roles.[337]

In August 1990, Prime Minister Brian Mulroney committed a naval task to the coalition, made up of the destroyers HMCS Terra Nova and HMCS Athabaskan, and supported by the supply ship HMCS Protecteur.[336] The Canadian Task Group led the coalition maritime logistics forces in the Persian Gulf.[338] About a quarter of all inspections of vessles suspected of running the coalition blockade were done by Canadian warships.[337] A fourth ship, HMCS Huron, arrived in-theatre after hostilities had ceased and were the first allied ship to visit Kuwait.[338]

A formation of coalition aircraft flying over Saudi Arabia during the Gulf War, 1991. A Canadian CF-18 Hornet is visible in the right foreground.

After the UN authorized use of force against Iraq, Canada deployed a CF-18 Hornet and Sikorsky CH-124 Sea King squadron with support personnel.[339] When the air war began, 24 Canadian CF-18s were integrated into the coalition force and were tasked with providing air cover and attacking ground targets. This includes assisting in the destruction of the Iraqi Navy during the Battle of Bubiyan.[340][341] The air war in Iraq was the first time since the Korean War that the Canadian military had participated in offensive combat operations.[337][340]

The Canadian Forces also deployed a 530-person military field hospital that was attached to a larger British unit.[337] A Canadian combat engineer regiment was investigated after photographs were released in 1991 that showed its members posing with dismembered bodies in a Kuwaiti minefield.[342] From 1991 to 2001, Canadian soldiers formed part of UNIKOM, a UN mission to monitor the demilitarized zone between Iraq and Kuwait.[337]

A security checkpoint operated by Canadian soldiers at Belet Huen Field in Somalia, 1993

Canadian Armed Forces were deployed during the Somali Civil War to support UNOSOM I,[343] a UN mission to provide security and humanitarian relief in the country, and monitor the UN-brokered ceasefires.[344] The first group of soldiers from the US-led, UN-sanctioned force, UNITAF, landed in Somalia in December 1992. The mission included soldiers from 23 countries, with Canada contributing approximately 1,400 soldiers primarily from the Canadian Airborne Regiment, and the oil replenisher HMCS Preserver to assist with naval operations.[345] In May 1993 the operation came under UN command and was renamed UNOSOM II.[346]

As the UN presence was not welcomed by some warring factions, the mission was unable to gain the cooperation of local warlords, enforce a ceasefire, or force an end to the conflict. As a result, the mission was unable to restore order, and was only able to protect food and medical aid distribution sites.[345]

A Canadian Airborne Regiment member in a foxhole in Somalia. The conduct of the regiment in the country became a national scandal in Canada.

Canadian forces were primarily based in Beledweyne and had rebuilt infrastructure, removed landmines, and guarded aid convoys.[345] However, the mission eventually became a political disaster for Canada.[347] Canadian soldiers performing the aforementioned duties were frequently harassed, with their encampment the target of looters. In response, the Canadian commander authorized looters to be shot in the leg if they ran. Another officer later permitted thieves to be "captured and abused."[348] In March 1993, soldiers from the Canadian Airborne Regiment killed a civilian that was escaping after breaking into their encampment to steal supplies. A week after, members of the airborne regiment tortured and killed a 16-year-old youth that broke into the encampment.[345][349]

Alleged attempts to cover up the killings by senior officials at the Department of National Defence triggered a national scandal in Canada. A federal inquiry into the scandal saw the careers of several officers ended, several soldiers court-martialed, and the Canadian Airborne Regiment disbanded.[345][350] The scandal tarnished Canada's international reputation, in what was heralded as "the darkest era in the history of the Canadian military" since the end of World War II.[348] The UN mission also ended in failure, as it was unable to restore order to Somalia. Mounting casualties, particularly after the Battle of Mogadishu, led the US to withdraw its forces. The experience had largely put an end to the use of a robust multinational military force to bring humanitarian aid to victims of civil war among western countries.[345]

Two CF-18s with Operation Echo depart Aviano Air Base in Italy in 2000. Operation Echo was the Canadian Forces operations launched to support NATO bombing of Yugoslavia.

Since 1991, nearly 40,000 members of the Canadian Armed Forces and civilian police services, including the Royal Canadian Mounted Police, served in peacekeeping operations in the Balkans. These peacekeeping operations were led by either the UN, NATO or the EU. The Royal Canadian Navy also provided warships to assist with the NATO maritime blockade of the region, while the Royal Canadian Air Force provided six CF-18 Hornets to assist with the NATO bombing of Yugoslavia.[351]

From 1991 to 1994, Canadian officers and support staff participated in the European Community Monitoring Mission in the Former Yugoslavia. In April 1992, the Canadian Forces provided an 860-person infantry battle group to the UNPROFOR, a UN-sanctioned force tasked with the demilitarization of select areas in Croatia.[352] Another 800-person contingent was provided to UNPROFOR, after its mission was expanded and the conflict intensified and spread to Bosnia and Herzegovina. In 1993, two Canadian companies were tasked with holding a strategic salient along the frontlines of Serb and Croat forces, the Medak pocket, to maintain the truce and oversee the safe passage of refugees. The position was later reinforced by two French mechanized divisions.[353]

An Iltis light utility vehicle on display at the Canadian War Museum. The vehicle was used by Canadian peacekeepers in the former Yugoslavia, and was damaged after it was fired on by Serb forces.

In September 1993, Croat forces launched Operation Medak Pocket, and attacked Serb positions in the area. On 15 September, the Canadian-French position at Medak pocket was besieged by Croat forces, who returned fire with the force available to them. Medak Pocket was the largest battle fought by Canadian forces since the Korean War.[353][354] The Canadian government reported that 27 Croatian soldiers were killed during the battle, and four Canadians wounded.[353][355] The 2nd Battalion Princess Patricia's Canadian Light Infantry were later awarded the Commander-in-Chief Unit Commendation for their actions at Medak Pocket.[356]

Other UN peacekeeping missions in the Balkans that the Canadian Forces provided for include UNCRO in Croatia, UNMIBH in Bosnia and Herzegovina, UNMIK in Kosovo, and UNPREDEP in North Macedonia. Other NATO missions in the region that the Canadian Forces provided for include IFOR and SFOR in Bosnia and Herzegovina, the Kosovo Force, and task forces Harvest and Fox in North Macedonia. EU missions involving the Canadian Forces include the EUFOR Concordia and Operation Althea.[351]

Canadian soldiers on their way to provide security for a site in northeast Kandahar in April 2002

Several weeks after the September 11th attacks against the US, Canada announced its intention to take part in the US-led war in Afghanistan (2001–2021). Several dozen soldiers from Canadian special forces units participated in the initial invasion of Afghanistan in 2001. An infantry battle group of 1,200 soldiers arrived in Kandahar in February 2002 and was tasked with fighting al-Qaeda and Taliban forces in the area, as well as protecting humanitarian operations.[357]

After the invasion, Canadian units served under NATO's International Security Assistance Force (ISAF). The Canadian Armed Forces provided a battle group of 2,000 infantry, as well as armoured, artillery, and aerial tactical and transport elements to ISAF. From 2003 to 2005, the battle group was based in Kabul and was tasked with providing security and disarming Afghan militias.[357] In November 2005, the CAF launched Operation Archer and shifted its focus from Kabul to Kandahar.[363] The battle group was transferred to Kandahar in 2006 and was responsible for counter-insurgency operations and the region's Provincial Reconstruction Team. While in Kandahar, the battle group won a series of battles, like Operation Medusa and the Battle of Panjwaii.[364] However, they were unable to root out the insurgents in the region, who were able to take refuge on the Pakistani side of the Afghanistan-Pakistan border.[357]

Canadian soldiers of the Kandahar Provincial Reconstruction Team on patrol in 2008. A Canadian LAV III is pictured in the background.

Public support for the war in Canada waned as casualties mounted in late 2006.[357] This partly led to "the Canadian soldier" being selected as the Canadian Press' Canadian Newsmaker of the Year.[365] Support for the war dropped further after Joint Task Force 2 members were photographed handing over detainees to Afghan security forces, who were subsequently tortured.[366] Despite growing public opposition, the government remained committed until 2011, partly due to the Canadian Forces' misrepresentation of the war's situation as a success. In 2011, Canada ended its combat mission in Afghanistan, and transferred responsibility for Kandahar back to US forces.[357] However, some Canadian soldiers remained in Afghanistan until March 2014, to train the Afghan National Army and Afghan National Police as a part of the NATO Training Mission-Afghanistan.[367] Members of Canadian Special Operations Forces Command were briefly redeployed to Afghanistan near the end of conflict in August 2021, to evacuate its citizens, close its embassy, and help facilitate the 2021 Kabul airlift.[368]

Over 40,000 Canadian soldiers served in the 12-year mission in Afghanistan, the longest campaign the Canadian military has participated in. There were 165 Canadians killed during the conflict, including 158 soldiers and seven civilians.[357] The conflict also resulted in the first female member of the Canadian Armed Forces to be killed in combat, Captain Nichola Goddard of the Royal Canadian Horse Artillery.[369]

RCAF CF-18 Hornets waiting to refuel from a British tanker, during the First Libyan Civil War in 2011.

On 25 February 2011, the Canadian Forces launched Operation Mobile, an evacuation mission in response to the First Libyan Civil War.[370] On 19 March, the operation's role was expanded to include air and maritime combat missions in support of the 2011 military intervention in Libya to implement United Nations Security Council Resolution 1973[371][372] NATO assumed military control for the multinational coalition on March 25 under Operation Unified Protector, with Lieutenant General Charles Bouchard of the RCAF named as its operational commander.[373] The coalition aimed to establish a no-fly zone and prevent government forces loyal to Muammar Gaddafi from carrying out air attacks on anti-Gaddafi forces and civilians,[372] carrying out a UN mandate to use all means, short of foreign occupation, to protect civilian-populated areas.[371][374]

At its peak, 655 Canadians were deployed on Operation Mobile. Canada committed several aircraft to the intervention, including seven CF-18 fighter jets based in Italy. The frigate HMCS Charlottetown, who was already on station in the Mediterranean as part of Standing NATO Maritime Group 1, also joined the operation and patrolled the waters off Misrata to support the UN arms embargo. In May 2011, Charlottetown was attacked by a shore battery, becoming the first Canadian warship to come under hostile fire since the Korean War.[370] On October 28, 2011, Prime Minister Stephen Harper announced that the military mission had ended successfully.[375]

In 2012, several insurgent groups in Mali seized control of parts of the country. The Mali government requested military aid from France in January 2013, who in turn asked its NATO allies for assistance. Canada initially provided one C-17 Globemaster III transport aircraft to assist with the French military operation in Mali.[376] From 2015 to 2022, the Canadian Armed Forces provided airlift support for French anti-insurgency operations throughout the Sahel region.[377][378] Over 1,250 CAF members were deployed to Mali from 2018 to 2019 to provide helicopter medical evacuations.[379] However, after 2019, the contingent was reduced to a small number of civilian and military personnel.[380]

A RCAF CF-18 Hornet breaks away from a USAF KC-135 Stratotanker, after completing refueling over Iraq. The Hornet was on a mission in support of Operation Impact.

In September 2014, Canada joined a global coalition to fight a war against the Islamic State.[381] From November 2014 to February 2016, Canadian CF-18s conducted 251 airstrikes in Iraq and five in Syria.[382] The Canadian Armed Forces ceased its combat activities in February 2016, and the operation was reoriented into a training mission.[383][384] After 2016, Canada scaled back its contribution, with only 250 personnel providing training and tactical air support for the mission as of January 2023,[385][386] The mission's deployments are spread between its logistics hub in Kuwait, and its training missions in Iraq, Jordan, and Lebanon.[385]

Canadian special forces were deployed to assist with the training mission.[384] In 2021, Canadian special forces were involved in an unspecified non-combat role in two military operations conducted by the Iraqi Armed Forces.[387][388] One Canadian special forces operator was also a member of Talon Anvil, a 20-person US Air Force special operations group that was criticized for circumventing rules designed to protect civilians, which resulted in the deaths of hundreds of non-combatants.[389] The increased use of special forces represents a shift in thinking within the CAF, with the armed forces increasingly relying on these units instead of conventional units to deal with asymmetric fighters in grey-zone conflicts. The reliance on special forces was acknowledged in a 2017 defence policy review, with the review predicting this reliance would likely increase for the foreseeable future.[388]