Throughout the Second Sino-Japanese war (1937–1945), Japanese dissidents and Japanese prisoners of war (POWs) joined the Chinese in the war against the Empire of Japan.
The education of Japanese captives by the Eighth Route Army began in 1938. In November 1940 the Peasants' and Workers' School was established. It reeducated Japanese POWs who afterwards were involved in propaganda.
Sanzo Nosaka, and Kaji Wataru joined the Chinese resistance. They reeducated Japanese POWs. Several organizations emerged during the war. The Anti-War League, the Japanese People's Emancipation League and a communist league.
References
Japanese in the Chinese resistance to the Empire of Japan Wikipedia(Text) CC BY-SA