Tanks of the United States US allies it was also used in conflicts beyond World War II. A 24-volt electrical system was used in the M4. Early Shermans mounted a 75 mm medium-velocity general-purpose gun. Although Ordnance began work on the Medium Tank T20 as a Sherman replacement, ultimately the Army decided to minimize production disruption by incorporating elements of other tank designs into the Sherman. Later M4A1, M4A2, and M4A3 models received the larger T23 turret with a high-velocity 76 mm M1 gun, which reduced the number of HE and smoke rounds carried and increased the number of anti-tank rounds. Later, the M4 and
Impact of the Korean War on the economy of the United States tensions with the Soviet Union, the Korean War further increased it. The Korean War cost the US$30 billion in 1953, which is equivalent to US$341 billion in 2011. During the last year of the war, annual war expenditure comprised about 14.1 percent of GDP. Approximately 34,000 Americans were killed in battle and about another 2,800 died from disease or injury, with total US casualties, which includes dead, wounded, and missing in action, adding up to 139,860. The "Korean War GI Bill" was implemented in 1952, eventually covering veterans between June 27, 1950 and February 1, 1955. It offered the same