Military trucks produced by International Harvester in the World War II era used a three part model number: M for Military, a second number indicating how many half-tons of off-road capacity, and a third number indicating the number of driven wheels. Example: M-2-4 is a one-ton model, 4x4. In some cases, an additional letter was inserted to further specify the model.
IH M-5H-6 Photo Gallery
M-5H-6 International Harvester 2 1/2 Ton 6x6 Cargo Truck (G-651) with 9 foot bed. Two piece windshield is unusual.
M-5H-6 International Harvester 2 1/2 Ton 6x6 Cargo Truck (G-651) with 12 foot bed.
Marines struggle to position M101 105mm Light Howitzer, Okinawa, 1945. Short wheelbase M-5H-6 2 1/2 ton 6x6 (right, rear) was used as a prime mover.
Marines in M-5H-6 6x6 trucks make slow progress during torrential rains on Okinawa, May 1945.