| by Harper, Stephen How HMS Petard Seized the German Naval Codes 2000, Sutton Publishing, Limited ISBN 0750923164 Hardcover, 128 pages From the publisher: "An attack by a British destroyer on a German U-boat in the Eastern Mediterranean in October 1942 altered the course of the entire war. The capture of secret German Enigma coding material from U-559, at the cost of the lives of two of HMS Petard's crew, enabled Bletchley Park's codebreakers to successfully crack the U-boat cypher." First published in the UK in 1999. |
Translations of this title include:
| by Harper, Stephen (Battle for Enigma) Die Jagd auf U559 2001, Mittler & Sohn Verlag ISBN 3813207374 Hardcover, 132 pages | |
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