I know for a fact the Japanese had used both chemical and biological weapons extensively on the battlefield in China. They also had a Unit 731 who did extensive research on chemical/biological weapons by experimenting on living Chinese. Countless Chinese had died in their labs, and many more were killed during the battle. Most of men worked for Unit 731 were granted immunity by the United States after the war to exchange for their knowledge gained from their experiment. It was a shame, because most of them were war criminals. What was the status of Germans using biological/chemical warfare in Europe? I know they used chemical weapons during WWI, but what about WWII?
USSR never used either chemical or biological weapons during the WW2. They had plenty of stockpiles.... but the weapons were merely stocked up as a deterrent.
They were granted immunity because, the U.S. wanted to find out what the researched revealed about the limits of the human body. The really shameful side of the story is the fact that they really didn't find out much and the amount of useful information gained from this exchange was almost non existent. As far as biological or chemical weapons being used in Europe goes, the only instance I know of is Mengeles experiments on concentration camp prisoners.
The U.S. had plenty of experence in biological warfare. It was used against the Indians as early as 1830.
Mustard and nerve gasses were at their prime during this time I believe. I went to some military training and they use a chemical deterrence that will really mess you up for a minute. Your left with your eyes burning and nose running. These stem from that type of research. I feel sorry for those that lost their lives but without those sacrifices we wouldn't be where we are in terms of non-lethal chems.
The Geneva Convention outlawed the use of chemical and biological weapons in the use of wars. Meaning they couldn't test or asses the large scale effectiveness of such agents, that's where the Japanese were supposed to come in.
