this was the designation of the Imperial All-Terrain Armored Transport vehicle, an elephantine assault tank built at the Kuat Drive Yards. These 15-meter-tall machines lumbered around on four articulated legs. Note that Inside the Worlds of the Star Wars Trilogy indicates that an AT-AT stood 22.5 meters tall. They required a crew of three to operate, although much of the war machine's motion was controlled by sophisticated artificial intelligence. The AT-AT could carry up to 40 troops and 400 kilograms of cargo. Armed with two fire-linked heavy laser cannons and two fire-linked medium blasters on its head-like cockpit, the AT-AT was designed to inspire fear in the enemies of the Empire. General Veers was a proponent of the AT-AT, and purposely overlooked the fact that the AT-AT could be toppled by a cable wrapped around its legs. Although this weakness was used effectively by the Alliance on Hoth, the Empire continued to use the AT-AT to instill fear.