M4 tractor
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The M4 high-speed tractor for World War II was an artillery tractor used by the US Army from 1943.
M4 high-speed tractor with 90 mm ammo box
155 mm Long Tom howitzer towed behind an M4 high-speed tractor
Dutch M4 tractor and M115 howitzer, 1956.
An M4 at Batey ha-Osef Museum, Tel Aviv, 2005
Raupenschlepper Ost
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Raupenschlepper Ost was a fully tracked, lightweight vehicle used by the Wehrmacht in World War II. It was conceived in response to the poor performance of wheeled and half-tracked vehicles in the mud
M4 tractor
…M6 tractor Raupenschlepper, Ost "US Army M-4 High Speed Tractor". olive-drab.com. Retrieved 27 August 2007…
RSO towing 105 mm howitzer
A Raupenschlepper Ost (RSO) in service just before the Kursk offensive in Russia
A Raupenschlepper Ost pulling 105 mm howitzer in Skanderbeg Square, Tirana, the capital of Albania, after taking over the city from the Italians, September 1943.
RSO/01, Sinsheim Auto & Technik Museum (2004)