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.

International Harvester TD-40 Tractor / Bulldozer

The International Harvester TD-40 Tractor / Bulldozer was produced from 1933 through 1939, the first IH diesel. They were procured by the U.S. Army in small numbers and were used through WW II. The vehicle was called the McCormick Deering TD-40 TracTracTor.

International Harvester TD-40 Characteristics

Weight	12,400 lbs (5624 kg)
Length	140 inches (355 cm)
Width	64 inches (162 cm)
Engine	IH 4 cyl diesel
Drawbar HP	37
Belt HP	48
Transmission	5 fwd / 1 rev

International TD-40 bulldozer knocking down trees, cutting a roadway for the Alcan Highway, 1942. Stack tube on side of engine goes through the cover, one characteristic of the TD-40. Using the Bucyrus-Erie blade that was supplied for the TD-40.