Cryptanalysis of the Enigma Bletchley Park to describe the network that used the same Enigma setting sheets. Initially these were recorded using coloured pencils and were given the names "red", "light blue" etc., and later the names of birds such as "kestrel". During World War II the settings for most networks lasted for 24 hours, although towards the end of the war, some were changed more frequently. The sheets had columns specifying, for each day of the month, the rotors to be used and their positions, the ring positions and the plugboard connections. For security, the dates were in reverse chronological order down the
The Man That Was Used Up The Man That Was Used Up "The Man That Was Used Up", sometimes subtitled "A Tale of the Late Bugaboo and Kickapoo Campaign", is a short story and satire by Edgar Allan Poe. It was first published in 1839 in "Burton's Gentleman's Magazine". The story follows an unnamed narrator who seeks out the famous war hero John A. B. C. Smith. He becomes suspicious that Smith has some deep secret when others refuse to describe him, instead remarking only on the latest advancements in technology. When he finally meets Smith, the man must first be assembled piece by piece. It