Unditching roller

Military vehicle support device From Wikipedia, the free encyclopedia

An unditching roller is a device fitted to the front of military vehicles, such as the M3 Scout Car[1] and the M3 half-track, for the purpose of preventing the vehicle from getting stuck in an obstacle, such as a ditch.[2] The C4 based Citroën P17C Kégresse from 1931 also had such a roller.[3]

Photo of an M3 Scout Car from the front, outdoors on a city street with other military vehicles. It has a wide cylindrical object mounted on front beneath the radiator grill. A coil of barbed wire and coiled rope are also mounted.
An M3 Scout Car showing the wide unditching roller at the front

Upon entering a ditch, the roller prevents the front of the vehicle from digging into the opposite face of the ditch; instead, the roller acts as a wide wheel enabling the front to climb out of the ditch more easily.[2]

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