The Enigma Machine was the famous mechanical encryption/decryption machine used by the German military in WWII. It was advanced for its day, and if used correctly would have been unbreakable. A combination of operator errors, good luck, and outstanding mathematical skill by British, Polish, and French cryptanalysts, most notably Alan Turing, led to the breaking of many of the Enigma messages, which helped to shorten WWII and facilitate an eventual Allied victory. This program is an accurate simulation of the Enigma Machine, and lets users set up the rotors, reflectors, and plugboards exactly the way the real Enigma would have been set up. Messages can then be encrypted and decrypted exactly the way they would have been on the real Enigma. Substantial Help is included in the program.