THE BLETCHLEY ARCHIVE: THE OFFICIAL HISTORY OF BRITISH SIGINT 1914-1945

Author: Frank Birch and (Editor) John Jackson

Publisher: Military Press

Year published: 2007

Pagination: ii + 282 pages, 46 pages of diagrams

Condition: New in card cover

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Volume 1 (Part2) and Volume 2. Covers 1941 to autumn 1943. Includes Mediterranean, Middle East, India and Far East. The revision of the Sigint Service, shortages of personnel and equipment, the expansion of Y Service, dissatisfaction of CG and CS and its reorganisation, the organisational problems at Bletchley Park and Service Ministries, Cryptanalytic and Intelligence contribution to the War in the West - “Fish”, Army/Air Enigma, German Railways, Schützstaffel, Police, Abwehr and German Naval Systems. Diagrams include the “Y” Organization, the expansion of the “Services” Branch of GC and CS, Allied Sigint success against German Naval telecoms, German reading of Allied traffic, the German diagram drawn up to demonstrate why Enigma was impossible to break