Signal Intelligence Service
The Signal Intelligence Service ( SIS for short ) was a secret US military unit that was entrusted with the cryptanalysis of opposing, mainly German, Italian and Japanese messages during World War II . Headquarters was Arlington Hall in Arlington, Virginia .
The SIS was founded in April 1930 by the cryptologist William F. Friedman together with the (then still unknown) math teachers Frank Rowlett , Abraham Sinkov and Solomon Kullback and gradually expanded. In addition to deciphering enemy messages, the SIS was later also responsible for encrypting the US armed forces' own military messages .
The SIS went on September 15, 1945 with the establishment of the United States Army Security Agency (ASA) in this.
literature
- Paul N. Pfeiffer: Breaking the German Weather Ciphers in the Mediterranean Detachment G - 849th Signal Intelligence Service . Cryptologia , Vol 22 (4), October 1998, pp. 354-369.
- Joseph S. Schick: With the 849th SIS - 1942–45 . Cryptologia, Vol 11 (1), January 1987, pp. 29-39.
Web links
- US Signals Intelligence in World War II . Retrieved February 4, 2016.