At the Royal Signals Museum we see how military communications progressed from the use of torches and sunlight, through flags, the Semaphore and the Shutter Telegraph, to Morse Code, the telephone and the wireless. Then came the quantum leap of genius which led to the invention of the computer and successful decoding of the enemy’s Enigma and other codes used during World War Two, and beyond. To the present time with encrypted Satellite Communications and Integrated Battlefield communications.