 Turkey, however did declare war on Germany at the very end of the conflict as a means of being allowed to join the postwar United Nations.During World War II, some elements of the Ukrainian nationalist underground fought both the German and Soviet forces, forming the Ukrainian Insurgent Army in 1942, while other Ukrainians initially collaborated with the Nazis, having been ignored by all other powers.In 1941 the German invaders and their Axis allies initially advanced against desperate but unsuccessful efforts of the Red Army.