I am reading this:
it has a little WW1 stuff in it.
History eh, the things you learn, and don't believe everything you read n the papers... wink.
It's not a bad book. a bit repetitive in places, revealing in others.
What I learned:
How an Enigma machine works. Never ever thought I would know but, now I do.
It's pretty clever. Encrypting the actual message key with the day key is a stroke of brilliance.
( Enigma machines can use the same day key for the header which contains the second random key and that message is encrypted with that second random key so that
frequency analysis of the entire days messages will prove very very very hard to do. Each message for the day uses the "day key" and then a new random one. ) : )
as luck would have it a machine and that months keys fell into allied hands.... ( U110 ?? )
and one time pads. wow. clever.
Signals eh. running wires and messages. a job for the extra brave I suspect.
so there you go. My latest read.