There are loads of books on the war. I remember reading an article a while back that not all are accurate and they had created certain myths about the war. I need to hunt that article out again.
The best books on World War 2. Five Books has extensive coverage of World War II with military experts giving reading lists on aspects of the war or individual battles.
fivebooks.com
My next WWII book purchase is the Psychology of Nazism by Daniel Pick.
The biggest pile of crap on USMB is when Nazism is dragged up.