The operation was conducted Action by Field Marshal Bernard Montgomery 's Anglo-Canadian 21st Army Group , primarily consisting Cause_to_be_included of the First Canadian Army under Lieutenant-General Harry Crerar and the British XXX Corps under Lieutenant-General Brian Horrocks .

Operation Military_operation Charnwood was an Anglo-Canadian offensive that took place Process_start from 8 to 9 July 1944 , during the Battle for Caen , part of the larger Operation Overlord ( code-name for the Battle of Normandy ) in the Second World War .

It was also hoped that the attack Attack would forestall the transfer of German armoured units from the Anglo-Canadian sector to the American sector to the west , where an offensive was being prepared .

By the time all operations on the Anglo-Canadian front were ordered Arranging to halt at 21:00 , The Queen 's Own Rifles of Canada had reached Arriving its D-Day objective and the 3rd Canadian Infantry Division had succeeded in pushing farther inland than any other landing force on D-Day .

On 9 February , the U.S. Ninth Army—operating under Field Marshal Sir Bernard Montgomery 's Anglo-Canadian 21st Army Group since the Battle of the Bulge—was to cross Motion_directional the Roer and link Connect up with the Canadian First Army , under Lieutenant-General Harry Crerar , coming from the Nijmegen area of the Netherlands in Operation Veritable , which had started Process_start at 05:00 on 8 February .