Imitation Game: how did the Enigma machine work?

The Telegraph visits the Science Museum to find out how the Enigma Machine successfully decoded Nazi communications. It was supposed to be the unbreakable code. But during World War Two, Nazi Enigma communications were successfully decoded by a team of mathematicians and problem-solvers inside Britain’s Government Code and Cypher School at Beltchley Park, Buckinghamshire. The Enigma machines, originally developed by Dr Arthur Scherbuis in 1923, allowed an operator to type in a message and then scramble i