Japan's Unit 731 is one of the best kept and most horrifying secrets of World War II. Unit 731 experimented on Japanese and Chinese civilians as well as Russian and American POWs during the Second Sino-Japanese War in the 1930s and throughout World War II.


Led by the enigmatic Dr. Shiro Ishii, Unit 731 committed thousands of macabre experiments and infected hundreds of thousands with the plague in China. Most of the scientists involved with Unit 731 escaped trial and entered mainstream society at the end of the war due to an agreement with Allied commanders, but a few are speaking of the horrors they committed in their old age.


The Japanese military actively sought biological and chemical weapons to use against China during the Second Second Sino-Japanese War, andlater during World War II. Under General Shiro Ishii, a physician and officer in the Kwantung Army, Unit 731 conducted experiments on human subjects from China and Japan, with Russian and American prisoners of war along also becoming fodder for their sickening hypotheses.

Ishii drew the eye of Emperor Hirohito in a demonstration where Ishii filtered his own urine and offered it to Hirohito, seen by Japanese citizens as deity, to drink. The emperor declined, but Ishii consumed the filtered urine with joy. A Japanese company later mass produced the filter, with Ishii receiving a portion of the profits.

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Unit 731 would come under the Epidemic Prevention and Water Purification Department