Today in WW II: 10 Apr 1941 Destroyer USS Niblack [DD-424] drops depth charges on a German U-Boat, the first American combat action against Germany in WWII.  More 
10 Apr 1942 Bataan Death March begins.
10 Apr 1944 Russians recapture the Black Sea port of Odessa.
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International Harvester TD-20 Tractor / Bulldozer

The International Harvester TD-20 Tractor / Bulldozer was the successor to the IH TD-18 used during World War II. The IH TD-20 was introduced in 1958, replacing the last upgraded model of the TD-18. The TD-20 was produced in several models including the TD-20B, TD-20C, TD-20E, and TD-20H. In addition to International Harvester, the TD-20 has been produced by Dresser, HSW, and Dressta as they successively took over the original IH line of tracked vehicles starting in 1982. The TD-20H continues to be marketed by Dressta in the mid 2000s.

The IH TD-20 tractor is powered by a 691 cid 6 cyl diesel engine producing 110 drawbar hp, mated to a 6 speed transmission.

The military nomenclature for the IH TD-20 is Tractor, Full Tracked, Low Speed, NSN 2410-00-928-7491.

International Harvester TD-20 Bulldozer photographed during construction at Phu Cat Air Base, Vietnam. April 1967, operated by member of the 819th RED HORSE Squadron, USAF.  Thanks to Ron Nash for correct ID.
International Harvester TD-20 Bulldozer photographed during construction at Phu Cat Air Base, Vietnam. April 1967, operated by member of the 819th RED HORSE Squadron, USAF. Thanks to Ron Nash for correct ID.