Some of the Italian troops based outside Italy, in the occupied Balkans and Greek islands, were able to stand some weeks after the armistice, but without any determined support by the Allies, they were all overwhelmed by the Germans by the end of September 1943. On the island of Cephalonia, the Italian Acqui Division was massacred after it had resisted German forces. Only on the islands of Leros and Samos, with British reinforcements, would the resistance last until November 1943, and in Corsica, Italian troops forced German troops to leave the island.