The I Army Corps was based in Turin and participated in World War I.

It reached Bessans, Bramans, Modane, and Termignon in the Savoie.

After the landings of the Allies in French North Africa, I Corps participated in Case Anton and on 11 November 1942, it entered French territory again.

Starting from December, it took up coastal defense tasks between Cavater and Cape Martin.

It remained here until September 1943, when it was disarmed by the Germans and dissolved after the Armistice of Cassibile.