During World War II, Japan plotted to unleash a plague on the United States
Japan ’s Unit 731 is one of the undecomposed kept and most horrifying secrets of World War II . Unit 731 experiment on Japanese and Chinese civilian as well as Russian and American prisoner of war during the 2d Sino - Japanese War in the thirties and throughout World War II . direct by the oracular Dr. Shiro Ishii , Unit 731 committed M of macabre experiments and infect hundreds of thousands with the plague in China ....