The Willys MB and the Ford GPW, both formally called the U.S. Army truck, 1/4-ton, 4×4, command reconnaissance, commonly known as the Willys Jeep, Jeep, or jeep, and sometimes referred to by its Standard Army vehicle supply G-503, were highly successful American off-road capable, light military utility vehicles. Well over 600,000 were built to a single standardized design, for the United States and the Allied forces in World War II, from 1941 until 1945. This also made it (by its light weight) the world's first mass-produced four-wheel-drive car, built in six-figure numbers.
The 1/4-ton jeep became the primary light, wheeled, multi-role vehicle of the United States military and its allies, with President Eisenhower once calling it "one of three decisive weapons the U.S. had during WWII." With some 640,000 units built, the 1/4-ton jeeps constituted a quarter of the total military support motor vehicles that the U.S. produced during the war, and almost two-thirds of the 988,000 light 4WD vehicles produced, when counted together with the Dodge WC series. Large numbers of jeeps were provided to U.S. allies, including the Soviet Union at the time. Aside from large amounts of 11/2- and 21/2-ton trucks, and 25,000 3/4-ton Dodges some 50,000 1/4-ton jeeps were shipped to help Russia during WWII against Nazi Germany's total production of just over 50,000 Kubelwagens, the jeep's primary counterpart.
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