Erhard Maertens information

Erhard Maertens
Erhard Maertens
	Erhard Maertens, before May 1945
Other name(s)	Eberhard Maertens
Born	26 February 1891; Głogów
Died	5 May 1945 (aged 54); Berlin
Allegiance	Germany
Service/branch	Kriegsmarine
Rank	Vizeadmiral
Commands held	Naval Academy Mürwik
Battles/wars	World War II

Erhard Maertens or Eberhard Maertens (26 February 1891 – 5 May 1945)^[1]^[2] was a German Vizeadmiral of the Kriegsmarine during World War II. From 16 June 1941 to 5 May 1943, he was Chief of Office of Naval Intelligence, Naval War Command (German: Marinekommandoamt) in the Oberkommando der Marine. Maertens was known for underestimating British intelligence, and specifically, overrating the security of the Naval Enigma cipher machine. In 1941, he held a naval enquiry into the strength of Naval Enigma security after the capture of U-boat U-570, and attributed all the suspicious losses in U-boats at the time to the British Huff-Duff. In the second enquiry, ordered by the Commander-in-Chief of the Navy (German: Oberbefehlshaber der Kriegsmarine) Karl Dönitz, in May 1943, he investigated a number of areas, which exculpated Enigma security in the end, for the second time, incorrectly blaming British 9.7 centimetre centimetric radar for the massive losses in U-boats by mid 1943.^[3]

^ Literature by and about Erhard Maertens in the German National Library catalogue
^ Hildebrand, Hans H. (1996). German admirals 1849 – 1945: Navy officials in the Admiralsrang: Attachment: à la suite of the naval personalities and supplements to the volumes 1 – 3. Vol 2, German:Deutschlands Admirale 1849 – 1945: Marinebeamte im Admiralsrang : Anhang: à la suite der Marine gestellte Persönlichkeiten und Nachträge zu den Bänden 1 – 3. Bd. 4. Biblio-Verlag. ISBN 978-3-7648-2483-9. Retrieved 28 September 2017.
^ Bauer, Friedrich L. (9 March 2013). Decrypted Secrets: Methods and Maxims of Cryptology. Springer Science & Business Media. p. 195. ISBN 978-3-662-03452-1. Retrieved 21 September 2017.

[1] Literature by and about Erhard Maertens in the German National Library catalogue

[Hildebrand1996-2] Hildebrand, Hans H. (1996). German admirals 1849 – 1945: Navy officials in the Admiralsrang: Attachment: à la suite of the naval personalities and supplements to the volumes 1 – 3. Vol 2, German:Deutschlands Admirale 1849 – 1945: Marinebeamte im Admiralsrang : Anhang: à la suite der Marine gestellte Persönlichkeiten und Nachträge zu den Bänden 1 – 3. Bd. 4. Biblio-Verlag. ISBN 978-3-7648-2483-9. Retrieved 28 September 2017.

[Bauer2013-3] Bauer, Friedrich L. (9 March 2013). Decrypted Secrets: Methods and Maxims of Cryptology. Springer Science & Business Media. p. 195. ISBN 978-3-662-03452-1. Retrieved 21 September 2017.

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