During the German operation Schwartz against the Partisans in May and June 1943, Germans disarmed large number of Chetniks without fighting, as they feared they would turn against them in case of an Allied invasion of the Balkans. After the capitulation of Italy in September 1943, Partisans managed to take hold of most of Montenegro for a brief time, but Montenegro was soon occupied by German forces, and fierce fighting continued during late 1943 and entire 1944. Montenegro was liberated by the Partisans in December 1944.