http://www.amazon.com/Stalag-Wiscons.../dp/187856983X
My wife bought me this book when she was giving a lecture at the University of Wisconsin.
One of the stories they mentioned was back during WW2, there were a high percentage of Germans living in Wisconsin that were fresh off the boat from Germany. One day, a farmer gets a knock on the door. Opens it up and there's a US Army MP escorting a POW. It's his nephew, now a German Heer Soldat, over for a visit. Guy had gotten rolled up in North Africa.