Beginner's Guide to Tunny.

This is part of the secret story behind one of the greatest intellectual feats of World War II, a feat that gave birth to the digital age. The super code that the British knew as Tunny was generated by a machine called the Lorenz (SZ40). Find out how the machine worked and why the Germans needed this code, which was tougher than the infamous Enigma.


Role Contributor
NarratorKeeley Hawes
DirectorJulian Carey
ProducerJulian Carey
Executive ProducerTim Green

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