I know little of the history of WWI, and WWII. Mostly what I was fed in public school, and a little more gleaned from James Stokesbury's books on the subject.
I'm up to September 1938, in 'Almost', now. The cables passing between Chamberlain and Benes - are those really real? Was he really saying those things? How much of that is fictionalized?
Perhaps its just because of the context within which these larger events are nestled, as part of this story, but I find it pretty horrifying, what was going on there...