The Canadian Ram Cruiser Tank was a unique Canadian evolution of the American M3 Medium (Grant/Lee). It had been acknowledged as early as August 1940 that the British would be unable to meet our requirements for cruiser tanks, and Montreal Locomotive Works (a subsidiary of American Locomotive Co., which was already building tanks) was designated as the Canadian Tank Arsenal. It was judged that the excessive height and inferior armament configuration of the M3 series could be improved upon locally, and a new tank was designed around the excellent M3 engine and drivetrain.
Unfortunately, during the process of design, the British specification for cruiser tanks mounting a 2 pdr gun was adhered to, and the 60-inch turret ring of the Grant was retained, thus restricting the Ram from ever being upgunned beyond 6 pdr. [then] Colonel Worthington himself had argued for the minimum of a 75mm main gun, but was overrulled by the Interdepartmental Tank Committee under the influence of the British Tank Mission. While this was happening, however, British experience on the battlefield was already dictating the necessity for a heavier main gun, and the early 2 pdr Ram did at least get a turret with a readily detachable frontpiece, which could be removed with gun in place and replaced by a 6pdr assembly.
The prototype Ram rolled off the assembly line in June 1941, and general production of the Ram I began that November. Within three months the line had been changed to Ram II production, which continued until July 1943, at which point the decision had been taken to re-equip British and Canadian units with the abundant and better-armed U.S. Sherman. A total of 1948 Rams of all marques were produced, the last 84 of which were the O.P. variant carrying a dummy gun and two No. 19 Wireless sets for use by the FOOs (Forward Observation Officers) of the Sexton-mounted artillery regiments then being formed.
In its cruiser configuration, and limited by its small turret ring and 6 pdr gun, the Ram never saw combat, but was used instead for the training of armour crews in Great Britain. By late-summer 1944, with the war raging in Northern Europe, even that function had all but ceased, but the Ram found new life, and went on to do yeoman service, in a number of variants including the Kangaroo armoured personnel carrier, Badger flame tank, Wallaby ammunition tank, armoured gun tower (for the 17 pdr towed AT gun) and ARV. Sadly, most of the Rams which survived the European war ended their time as hard targets on a variety of tank ranges, and few examples remain.
;D No.
