Date: Aug. 19, 1942 Time: 5 a.m. Location: A stone beach on the northern coast of France. Operation: More than 6,000 Allied forces infantrymen attempt to penetrate a German stronghold. Outcome: Unmitigated disaster. Less than six hours later, 60 per cent of the infantrymen were dead, injured and/or captured; 907 Canadians died. Why the Allied forces allowed the poorly planned Dieppe Raid to move forward has been a mystery for decades - until now. Montreal historian David O'Keefe has solved the mystery and, in the process, has rewritten a defining moment in military history. O'Keefe, a military historian by profession,...