M1 medium tractor

Prior to and during the second world war the US Army called several tractors M1 medium tractor. Under the Ordnance Corps these "off the shelf" tractors were meant to tow artillery pieces, so were not equipped with blades like their engineer counterparts. Eventually these were replaced by purpose built "high-speed tractors" (HST). Some tractors were equipped with crane attachments for ammunition, and material handling.

Tractors

 * Caterpillar model 30
 * Caterpillar model 35
 * Allis-Chalmers HD-7W.
 * Allis-Chalmers Monarch k35
 * Cletrac model 35
 * Caterpillar model Caterpillar RD6
 * Caterpillar D6
 * Cletrac model BC, w/angle dozer
 * Allis-Chalmers WM
 * G-132: a) M1 medium tractor TD-14, b) M3 tractor crane, 2-Ton, International Harvester TD14

Detailed information on Allis-Chalmers model WM

 * Engine: Allis-Chalmers WM. Gasoline. 4-cylinder 20 hp
 * Fuel tank: 24 gallons 750 usgal
 * gearbox: Four speeds forward, one reverse.
 * Length: 101 in
 * Width: 67 in
 * Height: 56 in
 * Working weight: 6730 lb