Medium tank to manufacture a well-balanced medium tank in very large numbers - around 57,000 T-34s and 49,000 M4 Sherman tanks were built during the war period. During and after World War II, the roles of light tanks were gradually taken over by less-expensive armoured cars and specialised reconnaissance vehicles. Heavy tanks, having shown their limitations in combat, experienced a limited post-war arms race of progressively more heavily armed and armoured designs. With the rise of more sophisticated anti-tank missile weapons, to which heavy tanks had demonstrated high vulnerability, these too were eventually phased out. With advances in technology, aspects such as
Allegations of biological warfare in the Korean War Allegations of biological warfare in the Korean War Allegations that the United States military used biological weapons in the Korean War (1950–53) were raised by the governments of People's Republic of China, the Soviet Union and North Korea. The claims were first raised in 1951. The story was covered by the worldwide press and led to a highly publicized international investigation in 1952. US Secretary of State Dean Acheson and other US and allied government officials denounced the allegations as a hoax. Subsequent scholars are split about the truth of the claims. Until the end of World War II, Japan