For the British navy, the First World War was a massive learning curve as, for the first time, she went into battle with an untried weapons system, mines, submarines, aircraft, and airships. In spite of this, the navy never failed to provide the shield which enabled the British Army to play a key part in the Western Front. Based on eyewitness accounts of the action, General Julian Thompson has written a gripping history that recreates the war at sea through the experiences of those who fought, and sometimes died.