In 1944–45, Soviet forces completely or partially liberated Romania, Bulgaria, Hungary, Yugoslavia, Poland, Czechoslovakia, Austria, Denmark, and Norway. Nazi Germany collapsed as Berlin was taken by the Soviet Union's Red Army in a fight to the death on the city streets. 2,000,000 Soviet troops took part in the assault, and they faced 750,000 German troops. 78,000–305,000 Soviets were killed, while 325,000 German civilians and soldiers were killed. Hitler committed suicide on 30 April 1945. The final German Instrument of Surrender was signed on 8 May 1945.