Still leading the 26th Chasseurs, Digeon took part in the Ulm Campaign in 1805, including Lensberg, and Battle of Austerlitz, where he took three standards.

[2] Appointed in 1812 the civilian and military governor of the provinces of Córdoba and Jaén, he managed by a wise administration, to win the trust of people that the ravages of war had angered and reduced to the deepest misery.

By his brilliant leadership during Marshal Nicolas Soult's retreat from Andalusia, Digeon earned the rank of general of division on 3 March 1813.

At the end of that year he went to the Army of Catalonia under Marshal Louis Gabriel Suchet, and was in command of all the cavalry and the First Infantry Division.

Seconded in 1814 to the army defending Lyon, commanded by Marshal Pierre Augereau, he led a notable feat of arms.

Digeon suddenly resumed the offensive, captured a battery, and cut off part of the Austrian Hiller Infantry Regiment # 2 with nearly 400 prisoners.

He arrived there on 5 March, but after many fruitless efforts to keep the soldiers from joining Napoleon, he left that city with the Jacques Macdonald, Duke of Taranto.

In return, the restored king appointed him commander of the Cavalry Division of the Royal Guard, and later created him a peer of France with the title of Viscount.