The Massacre of Dieppe - 1942

S1, E4: This infamous battle was one of the worst moments of World War II. On one August evening, after 9 hours of fighting, over 2,000 mostly Canadian Allied soldiers were killed in a raid on a Nazi-occupied port. How did this terrible 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?