US government using researchers from Japanese Unit 731

• those arrested by Soviets were tried at war crime trials in 1949
• those captured by the US were secretly given immunity in exchange for data gathered during their human experiments (which included vivisection, biological weapons research on human subjects, and a bunch of other gruesome things)
• the US covered up human experimentations, handed stipends to the perpetrators on trial
• the US coopted their info and experience with bioweapons for use in their own biological warfare program