After the armistice with France, the XV Army Corps was in charge of the defense of the Ligurian coast, from the French border to Savona.
After the landings of the Allies in French North Africa, XV Corps participated in Case Anton and on 11 November 1942, it entered French territory again.
It occupied Nice, Grasse, Cannes, Antibes, St. Raphael and Toulon.
On 20 December 1942, XV Corps returned to Italy to again take up the coastal defense of Liguria.
It remained here until September 1943, when it was disarmed by the Germans and dissolved after the Armistice of Cassibile.