The Morris CDSW 6x4 was a six-wheeled artillery tractor brought into service in the early to mid-1930s by the British Army to tow its field guns.Ventham, Philip and Fletcher, David (1990) Moving the guns: the mechanisation of the Royal Artillery, 1854-1939, HMSO , Fletcher, David (1998) British Military Transport, 1829-1956, HM Stationery Office, ,
Typically it was used to pull the 18-pounder field gun and the 4.5-inch howitzer, and later the 25-pounder gun-howitzer which replaced those two weapons. It was also used, with a modified body, for hauling the 40mm Bofors in the Light Anti-Aircraft (LAA) regiments. A version equipped with a crane was used for "breakdown" work. It was for the large part replaced in its primary role towing the 25-pdrs by the Morris C8 "Quad".
CDSW indicated model "C", Double Axle rear "D", Six Cylinder Engine "S" and Winch "W".
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