Today in WW II: 12 May 1941 Konrad Zuse, a German engineer working alone, completed the Z3, later determined to be the first fully operational electromechanical computer. Isolated by WW II, Zuse's work was unknown in the US and UK until after the war.  More 
12 May 1942 Second Battle of Kharkov, eastern Ukraine: Red Army offensive captures Kharkov from Germans who later encircle and destroy the Soviet forces [12-28 May].
12 May 1943 Organized Axis resistance in North Africa ends.
12 May 1943 Third Washington Conference, the Trident Conference between Franklin D. Roosevelt and Winston Churchill begins in Washington, DC [12-27 May].
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.

US Military WW II M-5H-6 International Harvester 2 1/2 Ton 6x6 Cargo Truck (G-651)

More information about the M-5H-6 International Harvester Cargo Truck is found on the linked page.

Find additional photos and hi-res versions of the IH M-5H-6 2 1/2-ton 6x6 truck at the Olive-Drab Military Mashup.

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)
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)
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 was used as a prime mover
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
Marines in M-5H-6 6x6 trucks make slow progress during torrential rains on Okinawa, May 1945.