Right there you start going astray, a lot of them are doing logistics of one type or another, including our largest overseas military hospital, the top level hospital for serious GWoT theater injuries.
More directly, it would all depend on why they were there.
It doesn't take an attack for there to be problems. Accidents, leaks, contamination, poor behaviour and violence by troops etc is somewhat more likely. That and the external appearance of supporting what ever the stationed troops are up to (often related to regional/nearby wars etc).
I think you mean half a hundred thousand. It really depends, are they going to movies and buying local beer or are they shooting at people? What is currently happening in Germany is the first not the second.
As it turns out I'm reading Washington's Crossing (http://www.amazon.com/Washingtons-Crossing-Pivotal-Moments-A...) and at the point where I'm at the Hessians are not enjoying the attacks they're receiving from the locals of occupied New Jersey (plus some raids from across the Delaware). Seems their thorough plundering wasn't well received....
Right there you start going astray, a lot of them are doing logistics of one type or another, including our largest overseas military hospital, the top level hospital for serious GWoT theater injuries.
More directly, it would all depend on why they were there.