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
The Man That Was Used Up story seems to suggest that the war hero has nothing left but the injuries he has received in battle to make up his identity. According to Shawn James Rosenheim, Poe also is questioning technology, suggesting that it will soon be difficult to distinguish man from machine. The story also has minor critiques of racism; the war hero was taken apart by Indians but is put together by his "old negro valet" named Pompey (a name Poe also uses in "A Predicament"), arguably undermining the power of white male dominance. Poe may also have been reacting to the popular "subversive" humor