Tanks of the United States John J. Pershing who led the American Expeditionary Force in Europe in World War I, it was designed and came out at the end of World War II and was used in the Korean Conflict. In May 1946, due to changing conceptions of the U.S. Army's tank needs, the M26 was reclassified as a medium tank. Designed as a heavy tank, the Pershing was a significant upgrade from the M4 Sherman in terms of firepower with its 90 mm gun and protection. On the other hand, its mobility was unsatisfactory for a medium tank (it used the same engine that
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