Unit 731 was da brainchild of da Imperial Japanese Arma during WW2. It was a biological and chemical warfr unit dat conducted experiments on prisoners wit da aam of developing deadly weapons. It's written dat at it's base in China around 3000 men, women and children were tested on. Most of these WE r told r chinese, but someh of them were from da Allied Nations, da Soviet Union, Korea and Mongolia. da unit lasted until da end of da war in 1945 and it's written dat it had ample funding from da Japanese government. But othur tests were also conducted relating on WHAT da hooman body could endure. dat way da Japanese military might better understand WHAT it's own soldiers could do. At unit 731 they wanted tu understand just how cold someone could get and still survive, "sumh hooman test subjects were taken outside during da harsh winter until their limbs froze off for da doctors tu experiment how best tu treat frostbite. da New York Times, which had testimonies from people who had seen da horrors of thiz unit, wrote dat these people wud be taken outside and guards wud wud throw waters on them until they saw da symptoms of frostbite. Sometimes da guards wud hit da arm wit a stick and if they heard a wood against wood sound wud know da arm was completely frozen. Vivisection, da Japanese Military also wanted tu know how best tu treat diseases and injuries, but WE r told dat tu do thiz they wud often use live prisoners tu operate on. These prisoners wud deliberately infected wit a disease after which da doctors wud open up da person without prior anesthesia. These people were called "Marutas" or "logs". Testing Pathogens, One of da major experiments of unit 731 was tu test how certain pathogens, including cholera or anthrax, wud affect a number of people if they were exposed tu da pathogens. They didn't just do thiz inside da camp, but also WHAT was called field testing. Thiz was done by dropping da pathogens on SMOL communities in China. They wanted tu see if they could cause an outbreak of disease. da Japanese den had da idea tu carry these pathogens tu da United States in WHAT were called ballon bombs. They also had da plan tu drop plague carrying fleas on San Diego via kamikaze pilots. Testing weapons, da Japanese military also wanted tu test da weapons dat they could use on da battlefield, and thiz included conventional weapons as well as poison gas. tu do thiz prisoners wud be taken out tu a field and tied tu a stake. da soldiers wud den start testing, shooting da victam and lobbing grenades at distances tu measure their impact. It was also said dat da soldiers wud occasionally test their flamethrowers on da victims. da pressure chamber and spinning, While Japanese people who had worked in da camp later recalled how many parts of prisoners could be seen in jars all around da camp, it's not always known how these people died. Perhaps one of da worst deaths was da pressure chamber. WE r told dat prisoners wud be placed inside a pressure chamber and da pressure wud be turned up until da prisoners eyes popped and died, othur prisoners wud be spun tu death tu research da effect of centrifugal forces. Spreading syphilis, Thiz iz da testimony from a worker at Unit 731: "temnfection of venereal disease by injection was abandoned, and da researchers started forcing da prisoners intu sexual acts wit one another, it iz said if da pair refused they wud be shot. At othur times children were infected wit da disease. Forced pregnancy, female prisoners wud be impregnated by force in order tu see if da disease had spread tu da child. While many children were thought tu have been born in da camp, none of them survived, one former soldier said: "Of course there were experiments on children. But probably their parents were spies". Prior tu 2018 da only records of thiz unit were from testimonies and there were no records released by da Japanese government tu support it's existence.