Today in WW II: 21 May 1942 Sinking of the Mexican tanker Faja de Oro by German submarine U-160, off Key West, precipitates Mexican declaration of war against Nazi Germany.

Autocar U-8144-T Ponton Tractor, 5-ton, 4x4 (G-511)

The Autocar U-8144-T Ponton Tractor, 5-ton, 4x4 (G-511) was a specialized tractor for towing ponton trailers loaded with bridge sections. It is very similar to the Mack NJU-1 Ponton Tractor.

Manuals for this vehicle:

TM 9-811 Operation and Maintenance
TM 9-1817 Power Train, Chassis and Body

Autocar U-8144-T Ponton Tractor, 5-ton, 4x4 (G-511). Photo 11 August 1941.

Autocar U-8144-T Ponton Tractor, 5-ton, 4x4 (G-511). 1941 Photo.

U.S. First Army convoy of Autocar U-8144-T Ponton Tractors, 5-ton, 4x4 (G-511) loaded with bubber bridge building floats and pontoon boats, near the Rhine at Ramagen, 1945.