Bernard Montgomery and Harry Crerar were not friends, and their relationship grew worse in September 1944 when Crerar skipped a meeting at Montgomery’s headquarters to attend a commemorative service at Dieppe. A furious Montgomery indicated that he wanted to sack Crerar, and the Canadian responded that he would consult his government. Monty quickly realized he could not easily get rid of the First Canadian Army commander, but Crerar, fuming, asked Canadian Military Headquarters to study how to secure more independence for his army. The course of the war by late 1944 eventually rendered this idea moot, but it was nonetheless an important, if hitherto unnoticed moment, in Canada’s military history.
Granatstein, J.L. "Montgomery, Crerar and the Possibility of Canadian Military Independence, 1944." Canadian Military History 29, 2 (2020)