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By 1915, the US Army was using trucks tactically. When the US joined World War I in April, 1917 it began purchasing trucks in larger numbers. Early trucks were often designed for both military and commercial use, later military-specific designs were built. Since 1940 the US military has ordered over 3,000,000 tactical trucks.
Family of 4×4 and 6×6 tactical trucks with 2.5-ton, 5-ton, 9-ton and 10-ton payload (U.S. tons) [1] Place of origin: United States: Service history; In service: 1996–present: Used by: United States Army and others (see Operators) Production history; Designer: Steyr of Austria (original); Stewart & Stevenson for FMTV requirement.
In 1949 the US Army set a requirement for a family of extra heavy-duty 10‑ton (9,072 kg) load rated, off-road, 6x6 tactical trucks. Mack's design, influenced by their WWII era NO ( 7 + 1 ⁄ 2 -ton, 6x6 truck), was chosen.
The Heavy Expanded Mobility Tactical Truck (HEMTT) is an eight-wheel drive, diesel-powered, 10-short-ton (9,100 kg) tactical truck. [2] The M977 HEMTT first entered service in 1982 with the United States Army as a replacement for the M520 Goer , and since that date has remained in production for the U.S. Army and other nations.
A series of trucks based on commercial truck models with minimal modifications to make them suitable for military service, they include M915 series of 14-ton 6x4 semi-tractors built by AM General and later Freightliner, the M916 20-ton 6x6 semi-tractors built by Freightliner, the M917 dump trucks initially Freightliner 18.5-ton 8x6 vehicles and ...
The safety of the M939 series of trucks has been criticized, especially braking performance and stability when loaded. In 1999 the U.S. Army began retrofitting anti-lock brake systems to the M939 trucks. [24] Until the trucks were modified, they were limited to a 40 mph (65 km/h) top speed by an Army-wide safety order. [citation needed]
The M-715 family saw service in the Vietnam War, but was considered underpowered and fragile, compared to the purpose-built Dodge M37 tactical trucks it was intended to replace. [2] From 1976 onwards, the U.S. military replaced the M715 series with the Dodge M880 series , again a 1 + 1 ⁄ 4 -ton militarized COTS truck.
The M520 "Truck, Cargo, 8-ton, 4x4", nicknamed Goer, truck series was formerly the US Army’s standard heavy tactical truck before its replacement by the Oshkosh HEMTT. As trucks go, the Caterpillar -made Goer stands out due to being articulated , much wider than other trucks, and lacking suspension on the wheels.