The story of Canada’s naval awakening from the dark, bloody winters of 1939–1942, to be “ready, aye, ready” to challenge the U-boats and drive them to defeat, is a Canadian wartime saga for the ages. While Canadians think of the Great War battle of Vimy Ridge as the country’s coming of age, it was the Battle of the Atlantic that proved Canada’s gauntlet to victory and a nation-building milestone.