German soldiers help a wounded Canadian POW following the failed Allied Dieppe Raid (codename: Operation Rutter). The Dieppe Raid (also called the Battle of Dieppe) was an Allied attack on the German-occupied French port of Dieppe on 19 August 1942. Over 6,000 infantrymen, predominantly Canadian, were supported by a Canadian Armored regiment and a strong force of Royal Navy and smaller Royal Air Force landing contingents. Objectives included seizing and holding a major port for a short period, both to prove that it was possible and to gather intelligence. Upon retreat, the Allies also wanted to destroy coastal defences, port structures and all strategic buildings. The raid had the added objectives of boosting morale and demonstrating the firm commitment of the Allied forces to open a Western front in Europe. Virtually none of these objectives were met. Allied fire support was grossly inadequate and the raiding force was largely trapped on the beach by obstacles and German fire. After less than 10 hours since the first landings, the last Allied troops had all been either killed, evacuated, or left behind to be captured by the Germans. Instead of a demonstration of resolve, the bloody fiasco showed the world that the Allies could not hope to invade France for a long time. A total of 3,623 of the 6,086 men (almost 60%) who made it ashore were either killed, wounded, or captured. Dieppe, Seine-Maritime, France. 19 August 1942.