This infamous battle is one of the worst chapters in the story of World War II. On one August evening, after 9 hours of fighting, over 2,000 Allied soldiers, most of them Canadians, were killed in a raid on a Nazi-occupied port. How did this fiasco unfold? What strategic goals were served by this perilous operation? What lessons did the Allies learn as they planned for the Normandy landings two years later?