[sima_yi]

Another good book is Battle of Wits by Stephen Budiansky. It goes into the stories of the breaking of the Enigma, and also of the Japanese diplomatic and naval codes.

[Tom Bombadil]

I will look for it.

[OrioleFan]

Thanks. I’ll add it to my reading list.

[Kevmo]

I first learned of Enigma when I read Winterbotham’s book The Ultra Secret. The information had only recently been declassified.

It was a good read.