I find when I'm reading about certain battles and overall theatres of war, it can be difficult to visualise where everyone is and I was wondering if there are any books or resources that can help.
The West Point History Department has a fantastic atlas of maps of almost every major conflict in history, including dozens of maps from WWII. Some of them are a bit cluttered and confusing, but it is still the most comprehensive set of military history maps I know of. Enjoy! http://www.westpoint.edu/history/sitepages/our%20atlases.aspx