GERMANY'S FIRST CRYPTANALYSIS ON THE WESTERN FRONT: DECRYPTING BRITISH AND FRENCH NAVAL CIPHERS IN WORLD WAR I

44 Personalakte Föppl.

45 Historisches Archiv der Technischen Universität München (HATUM) Personalakte Ludwig Föppl; Professor Bauer, letter to the author, 5 April 2004; Friedrich L Bauer Decrypted Secrets: Methods and Maxims of Cryptology 3rd rev. and updated ed. (Berlin, New York: Springer, 2002).

Hilmar-Detlef Brückner*

ADDRESS: 16 Knotestr., 81479 München GERMANY. hilmardetlef@aol.com.

* The author is greatly indebted to Dr. David Kahn who encouraged the article and whose comments improved it considerably, to Professor Friedrich L. Bauer for helpful advice, and to the head of the Kriegsarchiv of the Bayerisches Hauptstaatsarchiv (BHStA-KA) in Munich, Archivdirektor Dr. Achim Fuchs, and his staff for locating and putting at his disposal the files that made this paper possible. All documents quoted are in the BHStA-KA. All translations from the German are by the author.

BIOGRAPHICAL SKETCH

Hilmar-Detlef Brückner is a retired civil servant who works now as an independent researcher. His main field of interest is secret intelligence of Imperial Germany. He holds a degree in political science.

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