in a
Ram Kangaroo on the outskirts of
Ochtrup, Germany, 3 April 1945 The decision to convert redundant tanks into personnel carriers was inspired by Allied experiences during the
D-Day landings, where British and Canadian forces experienced much lower casualty rates by leading attacks on German lines with armour than did the Americans, who led with an infantry assault. To General
Guy Simonds, who was ordered to follow up the D-Day attacks with an assault on
Falaise, this experience suggested both the usefulness of such armour-first tactics, as well as the further benefits of using armoured vehicles to transport troops, leading him to stress the issue while planning his assault, deeming it essential "...that the infantry must be carried in bullet-proof and splinter-proof vehicles to the actual objectives." No such vehicles existed at that time, and this idea thus marked the advent of what are now called armoured personnel carriers. Carriers were code-named "
Kangaroos" partially after the codename of the Army Workshops Detachment that produced them, and partially because of the idea that infantry would be carried in the belly of the tank as safely as a young kangaroo in its mother's pouch. The order to convert 72 Priests into carriers by the commencement of
Operation Totalize on August 9 was given on July 31 by Brigadier C. M. Grant, the Deputy Director of Mechanical Engineering at Headquarters. Ultimately, 78 would be converted prior to the first engagement, in spite of the fact that the operation's start date had been advanced to August 7 by Simmonds although he had thought troops needed at least a week to train for using the new vehicles —an impressive feat, as the full engine overhaul included was generally a seven-day operation. The drivers for the new vehicles were swiftly and secretly recruited from the Armoured Corps reinforcements, artillery units, and the
Elgin Regiment, and were rushed into service with almost no training, first seeing action during the attack on
Falaise on the night of August 7–8, 1944. The attack on Falaise was carried out successfully, resulting in the capture of 200 tanks, 60 assault guns, 250 towed guns, and 2,500 motored vehicles from the Germans, as well as an unhindered six-day advance. The lead brigades of the assault had all been carried in the new Kangaroos, allowing them to move swiftly and providing the following results regarding the comparative casualties of the seven Canadian infantry battalions involved: Impressed by the carriers' performance, General Simonds began petitioning for the formation of a permanent carrier unit. ==History==