Both the Soviet Union and United States gathered data from the Unit after the fall of Japan. While twelve Unit 731 researchers arrested by Soviet forces were tried at the December 1949 Khabarovsk war crimes trials, they were sentenced lightly to the Siberian labor camp from two to 25 years, in exchange for the information they held.[10] Those captured by the US military were secretly given immunity,[11] The United States helped cover up the human experimentations and handed stipends to the perpetrators.[1] The US had co-opted the researchers’ bioweapons information and experience for use in their own warfare program (resembling Operation Paperclip), as did the Soviet Union in building their bioweapons facility in Sverdlovsk using documentation captured from the Unit in Manchuria.[12][10][13]

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