Battle of the Atlantic
The Battle of the Atlantic, from 1939 to 1945, was the longest continuous battle of the Second World War. Canada played a key role in the Allied struggle for control of the North Atlantic, as German submarines worked furiously to cripple the convoys shipping crucial supplies to Europe. Victory was costly: more than 70,000 Allied seamen, merchant mariners and airmen lost their lives, including approximately 4,400 from Canada and Newfoundland. Many civilians also lost their lives, including 136 passengers of the ferry SS Caribou.