[2] He was lieutenant of the compagnie des chevau-légers de la garde du roi in 1664, French ambassador to Rome for the election of Pope Clement IX in 1667, gouvernor of Brittany in 1670.

He served as the King's commander-in-chief in Brittany, but could not stem the tide of the revolt of the papier timbré in 1675 and demanded intervention from the royal armies and punishment of the rebels.

He remained in command in Brittany until he was made ambassador to Rome a third time in 1689 on the election of Pope Alexander VIII.

He was dismissed from government of Brittany in 1693 to be replaced by the comte de Toulouse, and was instead made governor of Guyenne, remaining so until his death.

The duchy of Chaulnes was established by letters patent in January 1621 and registered on 6 March 1621 at the Parlement of Paris for the benefit of his father, a younger brother of Charles d'Albert, Duke of Luynes.