 In August 1945 the Soviet Army ousted the Japanese from China's Manchukuo and North Korea, contributing to the allied victory over Japan.The 1941–45 period of World War II is known in Russia as the "Great Patriotic War".The Soviet Union together with the United States, the United Kingdom and China were considered as the Big Four of Allied powers in World War II and later became the Four Policemen which was the foundation of the United Nations Security Council.