Enigma
Subtitle: The Battle for the Code
Publisher: Wiley
Published: February 12, 2004
Language: eng
Number of pages: 448
ISBN-13: 9780471490357
First sentence: On Sunday 1 November 1931 Hans Thilo Schmidt, a forty-three-year-old executive at the German Defence Ministry Cipher Office in Berlin, took a step from which there was no turning back.