In addition to German POWs, the U.S. held about 51,000 Italian POWs during WW2.
Some are covered in an award winning documentary film. According to the film's website:
Featuring rare period footage of POW camps, "Prisoners in Paradise" follows six Italian POWs (and the women they met in America) on their extraordinary journey—full of challenges, love, perseverance, and good luck. Captured primarily in Northern Africa—where they had been surviving on hard biscuits and water—the Italian POW’s were uniformly amazed at the abundance of food in the USA and the generosity of their captors.
Interesting to note:
Shortly after the bulk of the Italian POW’s arrived, Italy officially switched sides in the war, and over ninety percent of the POWs agreed to collaborate with the Allied war effort.
The site includes a clip (4:54) from the film.