Jean Joseph Dessolles, 1st Marquis Dessolles

Having entered into military service in 1792, he became an Adjutant-General under the command of Napoléon Bonaparte during the Italian campaign of the War of the First Coalition. He soon rose to the rank of Brigadier-General on 31 May 1797.

During the War of the Second Coalition, he served as Chief of Staff to Jean Victor Marie Moreau in the Italian theatre, where he distinguished himself at Noir in 1799. He defeated the Austrians in the Valtellina in 1800, where under his command, French forces killed 1,200, captured 4,000 men, and eighteen pieces of cannon.

He assisted at the Battle of Novi, at the Battles of Sainte-Marie (where he was named Major-General on 13 April 1799, and also at Lodi, where he was honoured with the nickname 'Decius français' (French Decius). He contributed to the French victory of Hohenlinden in 1801, and remained in service up to the Peace of Lunéville.

He was named a State Councillor (Conseiller d'État) in ordinary service, attached to the War section, on 30 Frimaire of the year X. In the Year XII, he entered into extraordinary service, and remained a member of the Council of Administration of War (Conseil d'Administration de la Guerre) until 1805.

On 12 Pluviôse of the year XIII, he was named Governor of the Palace of Versailles, and Grand Officer of the Legion of Honour in 1805. He received the provisional command of the Army of Hanover, until he was replaced by Bernadotte. He was then on standby until 1808.

He was disgraced in 1806 for having held hostile intentions against the Emperor, and was taken off the Council List (Liste du Conseil) on 2 February 1806. Napoléon wrote to Fouché on the subject:

Je vous dirais que le général Desolles a tenu en confidence des propos fort extraordinaires qui montreraient l'existence d'une petite clique aussi envenimée que lâche. (I would like to say to you that the general Desolles has taken into confidence very extraordinary intentions which would show the existence of a little clique as poisoned as it is cowardly.) - Correspondence, XI, n° 9088

He thereafter retired to a property that he owned near Auch, the Chartreuse du Pastisse at Preignan.

Eventually winning back imperial favour, he did not return to the State Council (Conseil d'État), and from 1808 to 1810 he commanded a division in Spain, during the Peninsular War.

Prior to the Battle of Talavera (27–28 July 1809), King Joseph left Madrid 23 July, at the head of some 5,800 troops, to meet up with Victor's 23,000 troops, and Sebastiani's 17,500, to take the offensive against Cuesta at Torrijos, rather than letting him advance on Madrid.[1] Left behind was only one brigade of Dessolles's division, with a few Spanish levies, with which Augustin Daniel Belliard, the governor of the city, was expected to hold the capital; some 4,000 men, in all. Belliard had to be prepared to retreat into the Citadel of Madrid, in the Retiro, with his troops and the whole body of the Afrancesados and their families, if there was an insurrection, or if Venegas managed to reach the city from the east, or possibly Wilson, whose column was at Escalona (Toledo), just thirty-eight miles from Madrid,[1] with a force that was believed to be much larger than it actually was.[note 1]

Dessolles later distinguished himself at the Battle of Ocaña, at the Passage of Sierra Morena, and at Despena-Perros. He also captured Cordoba, where he governed in a manner "to reconcile hearts".

He returned to France in February 1811, and remained until March 1812, when he was named Chief of Staff to Eugène de Beauharnais. In 1812, upon arrival in Smolensk, his health obligated him to return to Paris.