Here are some images of Italeri's 1/35 scale GMC CCKW Water Tank Truck.
From Wikipedia "
The GMC CCKW is a 2½ ton 6X6 U.S. Army cargo truck that saw service in World War II and the Korean War, often incorrectly referred to as a "Deuce and a Half" or "Jimmy". The CCKW came in many variants, the simplest being open or closed cab, and Long Wheel Base (LWB) or Short Wheel Base (SWB).
CCKWs were employed in large numbers for the Red Ball Express, an enormous convoy system created by Allied forces to supply their forces moving through Europe following the breakout from the D-Day beaches in Normandy, from August 25 to November 16, 1944, when the port facilities at Antwerp were opened. At its peak the Red Ball operated 5,958 vehicles, and carried about 12,500 tons of supplies a day.
The designation CCKW comes from model nomenclature used by GMC; the first C indicated a vehicle designed in 1941, the second C signified a conventional cab, the K indicated all-wheel drive and the W indicated dual powered rear axles. The term "Deuce and a Half" is apparently a post war term that was generally applied to all 2½ ton cargo trucks.
Initially all versions were of closed cab design (having a metal roof and doors) with all steel cargo beds. But as the war progressed an open cab version was designed that had fixed 'half doors' and a canvas top/sides and the steel bed was replaced by a wooden one to conserve steel.