By Michael Paterson ISBN 715327437; $16.99; 288 pages; Paperback Foreward: 6 Introduction: 8 1 Codes and War: 10 2 Bletchley Park: 46 3 1940: A Fateful Year: 78 4 Battle of the Atlantic: 100 5 North Africa and Italy: 128 6 The Resistance: 164 7 Towards Victory in Europe: 208 8 War in Pacific: 238 Chronology: 278 Bibliography and Sources: 280 Index: 282 Acknowledgements: 288 Picture Credits: 288