The only things Italy did successfully in the war was capturing Albania (if that can be counted as World War 2), Corsica and Nice.
This is even wrong, because Corsica was annexed by Italy without any war, as Vichy France was an allied state of the Axis, furthermore the Irredentist movement (Corsican movement promoting the unification of Corsica to Italy) in Corsica was very popular.
However, the rise of the French resistance liberated Corsica in 1943, the Italians already left the island (they had 30000 men in corsica); and when Italy signed the armistice the 3rd of September 1943, the Germans replaced them (15000 men) as it was an important strategical place, those Germans had later to retreat when the Free french resistance came with 6000 men from North Africa + Corsican resistance expelled them, by the end of the year of 1943, Corsica was freed.
Edited 4/22/2015 21:18:01