Just started reading
Hitler's Empire: How the Nazis Ruled Europe by Mark Mazower. Next on the "to read" list is
Shattered Sword by Parshall & Tully. I bought the book back in 2005 & it's about time that I got around to reading it.
The Riddle of the Sands by Robert Erskine Childers is a really worthwhile book. I read it years ago & plan to read it again sometime. See here:
http://en.wikipedia.org/wiki/The_Riddle_of_the_Sands for details.