Unravelling Enigma

Seldom out of the news for long, code-breaking has had a bad time in the media so far, readers and viewers often finding it as perplexing as it is intriguing. As one of the greatest achievements of the century, code- breaking is a fascinating story, but all too often misunderstood and felt to be obscure. The author covers the story from the early code-breaking efforts through the rickety structure...