Today in WW II: 30 Jul 1940 President of Estonia, Konstantin Päts, is imprisoned by Soviet agents and deported to Russia.  More 
30 Jul 1944 Operation Bluecoat begins, an attack by British Second Army supporting breakout in Normandy, aimed to secure the Vire junction and high ground of Mont Pinçon [30 Jul-7 Aug].
30 Jul 1945 USS Indianapolis [CA-35] torpedoed by Japanese submarine, sinks in 12 minutes killing 300 immediately, leaving 900 men in shark-infested waters without lifeboats; only 316 rescued 4 days later.
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.

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.