Part of the ALL-NEW Ladybird Expert series. Find out about WWII's longest battle. This is an accessible, insightful and authoritative account of the naval campaign that kept supply lines open and enabled Britain to continue to fight. Historian, author and broadcaster James Holland draws on the latest research and interviews with participants to bring colour, detail and a fresh perspective to the story of how the siege of Europe was broken. Inside, you'll discover exactly what happened in the Battle of the Atlantic. Ships, submarines and aircraft fought a bitter war that saw the deaths of over 100,000 servicemen and civilians. What's inside?

• The tragic demise of SS Athenia
• The power of U-boats
• Advantages of Britain's naval experience
• German naval Enigma codes
• The rapid development of advancing weaponry
• And much more . . . Written by the leading lights and most outstanding communicators in their fields, the Ladybird Expert books provide clear, accessible and authoritative introductions to subjects drawn from science, history and culture. For an adult readership, the Ladybird Expert series is produced in the same iconic small hardback format pioneered by the original Ladybirds. Each beautifully illustrated book features the first new illustrations produced in the original Ladybird style for nearly forty years.