1941. The Battle of the Atlantic is a disaster. Thousands of supply ships carrying vital food and fuel from North America to Britain are being torpedoed by German U-boats. Britain is only weeks away from starvation and crushing defeat. In the first week of 1942 a group of unlikely heroes - a retired naval captain and a clutch of brilliant young women - gather to form a secret strategy unit.  The Western Approaches Tactical Unit spends days and nights designing and playing war games in an effort to crack the U-boat tactics. As the U-boat wolfpacks continue to prey upon the supply ships, it is race against time to save Britain. With novelistic flair, investigative journalist Simon Parkin shines a light on this riveting true story of war at sea. Product Information: • ISBN: 9781529353211 • Author: Simon Parkin • Publisher: Sceptre • Format: Paperback • Pages: 320 • Dimensions: 19.6 x 12.8 x 2.8 cm