[2] He studied at the École Polytechnique de Paris (he was the first polytechnician coming from Tarn), and left it in 1804 to join military engineering.

Promoted Captain to the corps of military engineers of the army of Aragon, he participated in the sieges of Lérida, of Tortosa, of Tarragona and of Valencia and was made a Knight of the Legion of Honor on 6 August 1810.

During this campaign, on 22 February 1829 at Navarino, king Charles X of France made him Commander of the Legion of Honor.

[7] Finally, many improvements were made by the French engineering regiments to the cities of the Peloponnese (schools, post offices, printing houses, bridges, squares, fountains, gardens, etc.).

[8] He thus built from October 1828 the new cities of Modon (current Methoni) and Navarino (current Pylos), outside the walls of the fortresses, on the model of the bastides of Southwest France (Audoy originated from Tarn) and the cities of the Ionian Islands (which share common features, such as a central geometrical square bordered by covered galleries built with a succession of contiguous arches, each supported by a colonnade, as the arcades of Pylos or Corfu).

He was then promoted to brigadier general (Général de brigade) and inspector-general of the engineering in 1838, and then became director of the fortifications of Amiens and then of Lille.

[2] Audoy also taught at the Artillery and Engineering Application School (École d'application de l'artillerie et du génie) in Metz.