Unit 731 –  WWII Japanese bio warfare atrocities research program Unit 731 (Japanese: 731部隊, Hepburn: Nana-san-ichi Butai),[note 1] short for Manchu Detachment 731 and also known as the Kamo Detachment[3]: 198  and the Ishii Unit,[5] was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that engaged in lethal human experimentation and biological weapons manufacturing during the Second Sino-Japanese War (1937–1945) and World War II. Estimates vary as to how many were killed. Between … Continue reading Unit 731