Code-breaker that cracked Hitler cipher rebuilt

ONE of the greatest code-breaking achievements of the Second World War, the cracking of a cipher used by Hitler to communicate with his generals, has been celebrated at the opening of a new gallery.

A working “Tunny” machine painstakingly reconstructed using scraps of evidence, a few diagrams and photographs, will go on display as part of the new Tunny Gallery at the National Museum of Computing at Bletchley Park in Buckinghamshire.

The feat of engineering was completed in 1942 and was based on the workings of the then unseen German Lorenz cipher machine used to send encrypted messages between the German high command.