Unit 731 was a Japanese research facility established in 1935 in Pingfang, China.

Unit 731 was a Japanese research facility established in 1935 in Pingfang, China.


It was one of the most notorious and secretive institutions of the Imperial Japanese Army, responsible for the development of biological weapons and carrying out brutal human experiments during World War II.

The exact number of victims is unknown, but it is estimated that thousands of people, including Chinese, Korean, and Soviet prisoners of war, as well as civilians, were subjected to the inhumane experiments conducted at Unit 731.


One of the most heinous practices carried out at Unit 731 was vivisection without anesthesia, in which subjects were surgically opened while still alive in order to observe the effects of disease or injury. This was done in order to study the progression of diseases and test treatments. Another disturbing practice was the infection of subjects with diseases such as bubonic plague, cholera, and anthrax. These diseases were then spread in order to study the effects on populations and evaluate the efficacy of biological weapons.


Furthermore, Unit 731 also carried out experiments in which subjects were exposed to extreme temperatures, high altitudes, and lethal substances such as mustard gas, to observe the effects and study ways of inflicting harm in a wartime setting.

The prisoners of war and civilians subjected to these experiments had no chance of survival and were often left to die or were killed in order to study the progress of the diseases or injuries.

The horrors of Unit 731 are considered one of the worst atrocities of World War II, and have left a lasting impact on the world and the victims and their families.


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