Today in WW II: 13 Apr 1941 Belgrade, Yugoslavia's capital, falls to German forces.  More 
13 Apr 1941 Soviets and Japanese sign neutrality pact.
13 Apr 1943 Radio Berlin reveals the German army discovery of mass graves of Poles massacred by Soviets in the Katyn Forest.
13 Apr 1945 Soviet Red Army enters Vienna, Austria.
13 Apr 1945 Japanese wiped out on Fort Drum island, Manila Bay, Philippines after assault team sets off explosives in 3000 gallons of diesel fuel.
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Federal 94x43 Tractor, 4 to 5-ton, 4x4 (G-513)

The Federal 94x43 Tractor, 4 to 5-ton, 4x4 (G-513) was produced for the U.S. Army in during World War II as a line haul tractor. It was also used as the tractor for Signal Corps vans, known as the K-32 in that role. Federal built 8,119 of the 94x43 model trucks.

The Federal 94x43A was based on commercial tooling, with an enclosed metal cab. The Federal 94x43B and 94x43C were military models with an open cab, canvas top. Some units were equipped with machine gun ring mounts for antiaircraft defense.

The Federal 94x43 was powered by the Hercules RXC 529 cu. in., 112hp 6cyl gasoline engine. It had a maximum towed load capacity of 30,000 lbs.

See also, the functionally equivalent Autocar U-7144-T Tractor (G-510).

Federal 94x43A Tractor, 5-ton, 4x4 (G-513).  Photo taken 18 March 1941
Federal 94x43A Tractor, 5-ton, 4x4 (G-513). Photo taken 18 March 1941.

Federal 94x43A Tractor, 5-ton, 4x4 (G-513) with semi-trailer
Federal 94x43A Tractor, 5-ton, 4x4 (G-513) with semi-trailer.