O.K. I guess my age can be deduced from this but .....
My father was a "4F" civilian who worked for the U.S. Army at Fort Dix (then Camp Dix) New Jersey during WW2. As a small child I sometimes went to work with him.
There were a large number of German POWs "incarcerated" at Camp Dix and I met many of them. They were used in many maintenance roles around the base such as grounds keepers and stable hands (yes, the cavalry still had a few horses back then). My recollection is that without exception, they were nice, friendly and trustworthy individuals. In fact they were not incarcerated at all but seemed to me had the run of the base, usually without the accompaniment of guards. They wore U.S. Army fatigue uniforms with POW stenciled across the back in large letters. It seemed they were pleased to be in the U.S.A., out of the war zone and being well treated but still longed for home.
Those are my recollections, but it was 60+ years ago.