Chukiren , was an organization formed on 24 September 1957 following the repatriation to Japan of soldiers from the former Imperial Japanese Army who were interned as war criminals in China 's Fushun War Criminals Management Centre , where interns were subjected to intensive indoctrination by the Chinese Communist Party . While the Chinese government chose to prosecute the top Japanese leadership , it repatriated accused lower-ranking soldiers to Japan . Once in Japan , they gave testimony about their experience with crimes such as Unit 731 , comfort women , and the Nanking Massacre , but often received stringent opposition from Japanese nationalists and militarists , who proclaimed them to be communists or " brainwashed " by the Chinese communist government . Its members included Yoshio Shinozuka , Yasuji Kaneko , Tadayuki Furumi , and Ken Yuasa ; the association was disbanded in 2002
Unit 731
Unit 731
Association of Returnees from China