War
Second Sino-Japanese WarRepublic of China (Nationalist government), Communist-led Eighth Route Army and New Fourth Army, Soviet Volunteer Group (1937–1941), and United States
Empire of Japan, Manchukuo, Wang Jingwei regime (Nanjing, 1940–1945), and Mengjiang
Japan surrendered to the Allies in August 1945, and its forces in China surrendered at Nanjing on 9 September 1945; Manchukuo and the Wang Jingwei government ended with them.
At the same time here: World War II