GMC CCKW 2½-ton 6×6 truck

Red Ball Express GMC CCKW 2½-ton 6×6 truck stuck in the mud, 1944. (Photo Credit: wolny / Defense Link / Wikimedia Commons / Public Domain)

Often overlooked, the humble GMC CCKW 2½-ton 6×6 – or “Deuce and a Half,” as it was otherwise known – holds a prominent place in vehicle development during World War II. Engineered for harsh terrains and diverse payloads, over half a million were produced. It served as the backbone of the US Army’s logistics network, ferrying troops, food and ammunition across all theaters.

From https://www.warhistoryonline.com/military-vehicle-news/vehicles-world-war-ii.html