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US 2 1/2-ton, 6x6 Trucks in WW II

World War II was the first war in which massive numbers of trucks completely changed the equations of mobility for warfare. The production capability of the U.S. automotive industry poured out hundreds of thousands of jeep, trucks and armored vehicles. This made it possible for the U.S. and its allies to overwhelm the Axis with men and supplies, moving forward at a rate never before possible.

A U.S. Ninth Army GMC CCKW truck, just after crossing the Rhine River, March 1945
A U.S. Ninth Army GMC CCKW truck, just after crossing the Rhine River, March 1945.

Today in WW II: 21 Oct 1933 Germany gives notice of withdrawal from the League of Nations.  More 
21 Oct 1944 Aachen falls to American troops, the first German city to be captured.
21 Oct 1944 Allied ships experience the first kamikaze attack as a Japanese pilot suicidally flys his bomb carrying plane into the HMAS Australia off Leyte, Philippines.
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.

American 2 1/2-ton, 6x6 Trucks in World War II

Particularly in Europe, where the land warfare was most suitable for mobility, the ability to maneuver and supply by truck was a decisive advantage to the Allied armies in World War II. Although the German Army had pioneered mobile warfare in the late 1930s, they never became motorized to the extent of the Allies.

Closed cab CCKW on a street in Detroit, MI, April 1943
Closed cab CCKW on a street in Detroit, MI, April 1943. Truck registration number is USA 4134998.

Although many vehicles were in use in World War II, it was the 2 1/2 ton 6x6 (the "deuce and a half" or just "deuce") that bore most of the load. There were three main trucks in this category:

These trucks had many differences in details, but had the same function, general dimensions, and external appearance. More information on each truck is provided below on this page. Photographs are available in the Military Vehicle Charts at the linked pages for the individual trucks in the list just above.

Reo US-6 2 1/2 ton 6x6 (G-630)
Reo US-6 2 1/2 ton 6x6 (G-630)

Continued on WW II 2 1/2-ton, 6x6 Trucks Page 2.

Find additional photos and hi-res versions of World War II 2 1/2-ton cargo trucks at the Olive-Drab Military Mashup:

Vehicles ready for combat loading and for shipment overseas, at Morrison Area, Hampton Roads Port of Embarkation, Newport News, VA, 24 May 1943. These vehicles accompanied the 45th Division when it sailed for service in Africa, Sicily, and Italy.  First vehicle appears to be WC52 Dodge Truck, Cargo, 3/4 ton, 4x4 w/winch, followed by CCKW 2 1/2-ton 6x6, jeeps.
GM CCKW 2 1/2-ton 6x6 Cargo Truck loaded with crates sits on a Detroit, MI street, April 1943.
US Army vehicles move through the Huertgen Forest, circa October 1944.  CCKW 2 1/2-ton trucks, jeep, M2 halftrack.
Drilling a well in the surf, for shower water, Marshall Islands, 1944.  Truck is CCKW 2 1/2-ton 6x6 chassis with mounted LeRoi Model 105G Air Compressor, tool cabinets, hoses, and accessories.  The compressor had its own small gasoline engine.
2 1/2-ton truck (CCKW?) with what appears to be an SCR-299 transmitter and receiver unit mounted in the bed, near Camp Young, Desert Training Center, CA, 21 November 1942.  Typical configuration for such radio trucks included PE-95 power unit installed in towed Ben Hur K-52 trailer.
Amphibian truck, DUKW, 2 1/2-ton 6x6 (the Duck) standardized in October 1942, proved to be an extremely valuable piece of equipment. It could operate on land or water and was often used to bring supplies ashore where there were no ports or harbors available for larger craft. Supplies loaded from ships onto the Ducks could unload at the supply dumps, saving the extra handling involved when lighters or similar craft were used. This vehicle could carry approximately 25 men and their equipment or a 5,000-pound payload.

Recommended Books about WW II Military Cargo Trucks

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