Japan during World War II August to October 1938. By the time World War Two was in full swing Japan had the most interest in using biological warfare. Japan's Air Force dropped massive amounts of ceramic bombs filled with bubonic plague infested fleas in Ningbo, China. These attacks would eventually lead to thousands of deaths years after the war would end. In Japan's relentless and indiscriminate research methods on biological warfare, they poisoned more than 1,000 Chinese village wells to study cholera and typhus outbreaks.These diseases are caused by bacteria that with today's technology could potentially weaponised. Japan during World War II The Empire of
German camps in occupied Poland during World War II Łódź with hundreds of subsidiary "Arbeitskommandos"; Stalag VIII-B, Stalag XXI-D, plus a network of smaller ones including district camps. Many Soviet prisoners-of-war were also brought to occupied Poland, where most of them died in slave labor camps. The POW camp in Grądy (Stalag 324) held 100,000 Soviet prisoners; 80,000 of them perished. The Germans did not recognise Soviets as POWs and several million of them died in German hands. They were fed only once a day, and the meal would consist of bread, margarine and soup. The Polish nation lost the largest portion of its pre-war population during World War