History of the EnigmaHeadings include: History of the enigma / Invention of the Rotor Machine (1915) / Glowlamp Enigma (1924) / Commercial Enigma (1926) / Zählwerk Enigma (1928) / Military Enigma (1932) / Manufacturers / The Polish Breakthrough (1933) / World War II / The Polish Gift / Bletchley Park / The Ultra Secret / The Battle of the Atlantic / The Abwehr Enigma / The Japanese Enigma / Improvements / Relatives of Enigma / After the War / Other WWII German Cipher Machines / Enigma Family Tree / Enigma Timeline…