Cryptanalysis of the Enigma bombes were, however, very fast and the most successful. They were extensively used by Bletchley Park over teleprinter links (using the Combined Cipher Machine) to OP-20-G for both 3-rotor and 4-rotor jobs. Although the German army, SS, police, and railway all used Enigma with similar procedures, it was the "Luftwaffe" (Air Force) that was the first and most fruitful source of Ultra intelligence during the war. The messages were decrypted in Hut 6 at Bletchley Park and turned into intelligence reports in Hut 3. The network code-named ‘Red’ at Bletchley Park was broken regularly and quickly from 22 May 1940
German Radio Intelligence Operations during World War II The following is a transcript of an intercept made by the RI Unit of the 252nd Infantry Division in the Gzhatsk Area on 24 February 1943. Prepared from private records in the possession of Colonel () Leo Hepp. Explanation of code designations: Left column is time. Right is message. German Radio Intelligence Operations during World War II German Radio Intelligence Operation during World War II were signals intelligence operations that were undertaken by German Axis forces in Europe during World War II. In keeping with German signals practice since 1942, the term "communication intelligence" () had been used when intercept