2½-ton 6×6 truck
CLASS OF MILITARY MEDIUM DUTY TRUCKS
Deuce and a half; Deuce-and-a-half; 2½-ton 6x6 truck; 2 1/2-ton 6×6 truck
The -ton, 6×6 truck was a standard class of medium duty trucks, designed at the beginning of World War II for the US Armed Forces, in service for over half a century, from 1940 into the 1990s. Also frequently known as the deuce and a half, or just deuce, this nickname was popularized post WWII, likely in the Vietnam war era.