The Battle of the Atlantic was the single most important - and longest - campaign of the Second World War. If Britain lost this vital supply route it lost the war. This book shows how this epic struggle for maritime mastery played out, from the politicians and admirals to the men on and under the sea and their families waiting at home.

Jonathan Dimbleby is a writer, broadcaster and film-maker. He is the chairman of BBC Radio 4's weekly Any Questions? programme and presented ITV's flagship weekly political programme, This Week, for over ten years. He is also the author of Destiny in The Desert: The Road to El Alamein, which was followed by his BBC 2 programme Churchill's Desert War. Both were highly acclaimed. In 2008 his five-part series on Russia was broadcast by BBC 2, accompanied by his book, Russia: A Journey to the Heart of a Land and Its People. His other books include Richard Dimbleby: A Biography, The Palestinians, The Prince of Wales: A Biography and The Last Governor.