This link takes you too a load of downloads, where people who know, have marked on maps where exactly sites of interest are in the World, related to WWI, and WWII.

This is a fantastic resource for terrain builders, who are always plonking Airfields in the wrong place, or leave them out entirely.

http://www.gearthhacks.com/dlcat92/World-War-I.htm

http://www.gearthhacks.com/dlcat73/World-War-II.htm