Unit 731 , a biological and chemical warfare research and development unit of the Imperial Japanese Army , undertook lethal human experimentation during the period that comprised both the Second Sino-Japanese War , and the Second World War ( 1937 – 1945 ) . In Mindanao , Moro Muslim prisoners of war were subjected to various forms of vivisection by the Japanese , in many cases without anesthesia
Unit 731
Unit 731
Vivisection