Recently, i read on some article that the Italians used poison gas to subjugate the Ethiopians in 1936 and that the Japanese used bio weapons to cause famine in China. Given that the Germans possesed Zyklon B and other such gases, did they use any of them while invading the Soviets or any other countries? Thanks in advance.
More of course can be said, but this answer might be of interest, touching on it as part of a larger look at chemical warfare.