Theodor Arps (2 February 1884 in Garmisch-Partenkirchen — 28 April 1947)[1] was a German naval officer, most recently Deputy Admiral in World War II and from 1940 to 1945 a judge at the Reichskriegsgericht military court. Arps was naval director of German Naval Intelligence Service (German:Marinenachrichtendienst) from 1 October 1934 to 31 December 1939.[2][3] Arps' time at the Marinenachrichtendienst was known for increased rearmament at the agency, a modernizing period, preparing and undertaking assurance testing on the Naval Enigma for secure message use cases (which was insecure), training and mobilization planning and an increasingly efficient and modern signal intelligence architecture that was the culmination of two decades of work during the interwar period.
- ^ Faulkner, Marcus (1 August 2010). "The Kriegsmarine, Signals Intelligence and the Development of the B-Dienst Before the Second World War". Intelligence and National Security. 25 (4): 521–546. doi:10.1080/02684527.2010.537030. S2CID 154666062.
- ^ West, Nigel (2010). Historical Dictionary of Naval Intelligence. Rowman & Littlefield. p. 187. ISBN 978-0-8108-6760-4.
- ^ Hildebrand, Hans H; Henriot, Ernest (1988). Deutschlands Admirale, 1849-1945: Die militarischen Werdegange der See-, Ingenieur-, Sanitats-, Waffen- und Verwaltungsoffiziere im Admiralsrang ... Generale und Admirale [Germany's Admirals 1849-1945 Volume 1] (in German). Biblio-Verlag. ISBN 978-3-7648-1499-1.