Pérusse des Cars served in the
French Navy before he joined the
Army and was appointed
Maître de camp (equivalent to
Colonel) of the
Dragoons-
Artois regiment in 1774. After the death of his second brother during the
Battle of the Saintes in 1782, he took the title
Baron des Cars. In 1783, he became first
Maître d'hôtel du Roi of the King. In January 1784, he was made a
Brigadier of cavalry followed by
Lt.-Gen. on 9 March 1788. He served as député aux États-généraux in 1789, and left the country with the French princes in 1790 during the
French Revolution. In 1791, he was sent on a diplomatic mission to King
Gustav III of Sweden, followed by further missions, including in
Berlin. After the death of his eldest brother in March 1814, he was created Count of Cars and
brevet Duke of Cars on 9 March 1816. The dukedom was officially registered with the regional
Parlement by
letters patent on 29 December 1817. The Duke was awarded the
Grand Cross of the Order of Saint Louis. ==Personal life==