From Wikipedia, the free encyclopedia
Jump to: navigation, search

The Abhorchdienst (i.e. "Listening Bureau") was a German code-breaking bureau which operated during the final years of the First World War. It was established in 1916 and was composed mainly of mathematicians.[1] Other countries, such as France and Austria-Hungary, had set up similar organisations at an earlier stage, but the military context did not necessitate the development of the German bureau until 1916.[2]


  1. ^ Adams, Jefferson (2009). Historical dictionary of German intelligence. Scarecrow Press. p. 1. 
  2. ^ Singh, Simon (2010). The Code Book: The Secret History of Codes and Code-breaking. HarperCollins.