After the collapse of France to the German Wehrmacht in 1940, Corsica came under the rule of the Vichy French regime, which was collaborating with Nazi Germany. In November 1942 the island was occupied by Italian and German forces following the Anglo-American landings in North Africa. After the Italian armistice in September 1943, Italian and Free French Forces pushed the Germans out of the island, making Corsica the first French Department to be freed. Subsequently, the US military established 17 airfields, nicknamed "USS Corsica", which served as bases for attacks on targets in German-occupied Italy.