What.. they don't have windmills in Germany?
Of course they do but I was looking at the undeveloped appearance of the airfield which made me think of locations in Holland (Netherlands) but of course that
could be the same nearly anywhere. Its not a real good picture of course and hard to say but I dont think that structure is typical of the stone tower or wooden smock windmills (built high above ground) typical of Germany but more like the Dutch tower mill. Not that Im an expert on mills but I have a few hundred in my day.
By the way there are only four of these Dutch tower mills left today. If its one of those (unlikely) it would be easy to track down the location.