User:Gwopy/Books/ULTRA

ULTRA

 * Signals intelligence in modern history
 * Alan Turing
 * Bletchley Park
 * Ultra
 * Hut 8
 * Hut 6
 * Cryptanalysis of the Enigma
 * Lorenz cipher
 * Cryptanalysis of the Lorenz cipher
 * Purple (cipher machine)
 * Magic (cryptography)
 * Japanese naval codes