I originally posted this in the Scenario Designer's section, but it might be interesting for a broader audience:
The resources are two websites that provide the follwing for the German state of Northrhine-Westphalia, which saw a lot of action during WW2:
- 2D and 3D map views with incredible detail based on laser scans which will filter out trees and foilage to show the actual ground (remains of trench systems visible) which can be viewed at any scale and from any angle
- overlay of current or historical maps onto the terrain
- Aerial photographic coverage of the Northrhine-Westphalia at current and historical times (going back to 1926 or 1952)
See the links to those resources in the following thread of the Scenario Designer's section:
http://forums.gamesquad.com/showthread.php?124103-Aerial-Photograph-coverage-of-Northrhine-Westphalia-Area-in-Germany-1926-1952
Enjoy,
von Marwitz