My Dad, who was just a kid during the war, told me stories about the Italian prisoners of war who were used to work on the Adams Ranch, just a few miles from our family farm in Sac County, Iowa. They were treated very well, at least as well as hired hands. They were even allowed to walk in to town to go to the movies.
A fair number of the German POWs in the US wanted to come back to the US after the war. The French treatment of the POWs was not nearly as good, but nowhere near the brutality dished out by the Reds.