In 1942, with the outcome of the war very much in the balance, there was a pressing need for military success on mainland Europe. Churchill ordered Admiral Lord Mountbatten's Combined Operations HQ to take the war to the Germans. The Canadians were selected for the Dieppe raid, which, while a morale raiser, was a disaster. Over 3,000 men were lost. This authoritative account looks at the planning, execution and analyses the reasons for failure.