D'Éon returned to France in October 1760, and was granted a pension of 2,000 livres as reward for service in Russia. In May 1761, d'Éon became a captain of dragoons under the maréchal de Broglie and fought in the later stages of the Seven Years' War. D'Éon served at the Battle of Villinghausen in July 1761, and was wounded at Ultrop. After Empress Elizabeth died in January 1762, d'Éon was considered for further service in Russia, but instead was appointed secretary to the duc de Nivernais, awarded 1,000 livres, and sent to London to draft the peace treaty that formally ended the Seven Years' War. The treaty was signed in Paris on 10 February 1763, and d'Éon was awarded a further 6,000 livres, and received the Order of Saint-Louis on 30 March 1763, becoming the Chevalier d'Éon. The title , French for knight, is also sometimes used for French noblemen.