What research and development unit allegedly involved ex-soldier Yasuji Kaneko?
Unit 731 Unit 731 (Japanese: 731部隊 , Hepburn: Nana-san-ichi Butai ) was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that undertook lethal human experimentation during the Second Sino-Japanese War (1937–1945) of World War II. It was responsible for some of the most notorious war crimes carried out by Japan. Unit 731 was based at the Pingfang district of Harbin, the largest city in the Japanese puppet state of Manchukuo (now Northeast China).
Yair Klein Yair Klein (Hebrew: יאיר קליין‎ ‎ ; also known as Jair Klein) is a former lieutenant colonel in the Israeli army, who established a private mercenary company called Spearhead Ltd. Through Spearhead Ltd, Klein provided arms and training to armed forces in South America, Lebanon, and Sierra Leone. Klein and his company were accused of training the death-squads of drug traffickers and right-wing militias in Colombia in the 1980s.