Walter Fricke

Walter Ernst Fricke (1April 191521March 1988) was a distinguished German professor of theoretical astronomy at the University of Heidelberg. He was a mathematician and cryptanalyst during World War II at the Wehrmacht signals intelligence agency, Inspectorate 7/VI from 1941 to 1942 (which would later become the General der Nachrichtenaufklärung. In 1942 he was transferred to the OKW/Chi Section IIb. His specialty was the production of codes and ciphers, and the security studies of Army systems. After the war he was director of the Astronomical Calculation Institute (German: ''Astronomisches Rechen-Institut'') in Heidelberg, Germany. Provided by Wikipedia