Veneti (Gaul)

Caesar reports in Bellum Gallicum that he sent in 57 BC his protégé, Publius Crassus, to deal with coastal tribes in Armorica (including the Veneti) in the context of a Roman invasion of Britain planned for the following year, which eventually went astray until 55.[13] Although Caesar claims that they were forced to submit to Roman power, there is no evidence of an initial opposition from the Gallic tribes, and the fact that Caesar sent only one legion to negotiate with the Veneti suggests that no trouble was expected. Caesar's report is probably part of a political narrative that was set up to justify the conquest of Gauls and to downplay his aborted plan to invade Britain in 56.[14] The scholar Michel Rambaud has argued that the Gauls initially thought they were making an alliance with the Romans, not surrendering to them.[13]

In 56 BC, the Veneti captured the commissaries Rome had sent to demand grain supplies in the winter of 57–56, in order to use them as bargaining chips to secure the release of the hostages they had previously surrendered to Caesar. Hearing of the nascent revolt, all the coastal Gaulish tribes bound themselves by oath to act in concert. This is the cause explicitly given by Caesar for the war.[15] This version is contradicted by Strabo, who contends that the Veneti aimed to stop Caesar's planned invasion of Britain, which would have threatened their trade relations with the British island. Strabo's claim appears to be confirmed by the participation in the war of other Gallic tribes involved in trade with Britain, and by the involvement of Britons themselves.[16]

Caesar had left for Illyricum at the beginning of the winter of 57–56. Informed of the events occurring in Armorica by Crassus, he launched the construction of a fleet of galleys, and placed orders for ships from the Pictones, Santones, and other 'pacified tribes'. War preparations were quickly achieved, and Caesar joined the Roman army 'as soon as the season permitted'. In response, the Veneti summoned help for further groups, including the Morini, Menapii and Britons.[15]

Given the highly defensible nature of the Veneti strongholds, land attacks were frustrated by the incoming tide, and naval forces were left trapped on the rocks when the tide ebbed. Despite this, Caesar managed to engineer moles and raised siege-works that provided his legions with a base of operations. However, once the Veneti were threatened in one stronghold, they used their fleet to evacuate to another stronghold, obliging the Romans to repeat the same engineering feat elsewhere.

Julius Caesar's victories in the Gallic Wars, completed by 51 BC, extended Rome's territory to the English Channel and the Rhine. Caesar became the first Roman general to cross both bodies of water when he built a bridge across the Rhine and conducted the first invasion of Britain.

Battle of Morbihan

Since the destruction of the enemy fleet was the only permanent way to end this problem, Caesar directed his men to build ships. However, his galleys were at a serious disadvantage compared to the far thicker Veneti ships. The thickness of their ships meant they were resistant to ramming, whilst their greater height meant they could shower the Roman ships with projectiles, and even command the wooden turrets which Caesar had added to his bulwarks. The Veneti manoeuvred so skilfully under sail that boarding was impossible. These factors, coupled with their intimate knowledge of the coast and tides, put the Romans at a disadvantage. However, Caesar's legate Decimus Junius Brutus Albinus was given command of the Roman fleet, and in a decisive battle, succeeded in destroying the Gaulish fleet in Quiberon Bay, with Caesar watching from the shore. Using long billhooks, the Romans struck at the enemy's halyards as they swept past (these must have been fastened out-board), having the effect of dropping the huge leather mainsails to the deck, which crippled the vessel whether for sailing or rowing. The Romans were at last able to board, and the whole Veneti fleet fell into their hands.