Maître de Camp of a cavalry regiment and Brigadier in the Armées du Roi, he served in Italy in 1733 under his father's command.

Bachaumont noted, in his Mémoires (5 May 1770) that "[the Duke of Villars] was taxed with a vice that he had made fashionable at court, and that had brought him very wide renown, as can be seen in la Pucelle".

[3] The façade was completed in 1757, for the duke of Villars, by Georges Vallon : its four columns, surrounding a monumental entrance, were (with those of the Hôtel de Ville and University) the only ones that encroached on municipal space - the mark and privilege of the governor.

He also left a statue of his father by the sculptor Nicolas Coustou for the hall of the public library - this sculpture was closed in the Benedictine convent after the French Revolution and was forgotten until 1812, when it was put at the top of the grand staircase of the Hôtel de ville.

His daughter, widowed soon after her marriage, ended her days in a convent and so Honoré Armand de Villars had no descendants in the male line.