World War II: Operation Spring is one of the bloodiest days for the First Canadian Army during the war.
Operation Spring was an offensive operation of the Second World War conducted by II Canadian Corps during the Normandy campaign in 1944. The plan was intended to create pressure on the German forces operating on the British and Canadian front simultaneous with Operation Cobra, an American offensive. Operation Spring was intended to capture Verrières Ridge and the villages on the south slope of the ridge. The German defence of the ridge contained the offensive on the first day and inflicted many casualties on the Canadians.