I remember my grandmother telling me about Italian prisoners of war in south Louisiana during WW iI. They would go visit the prisoners and write letters back to their families for them. Ran across this article about German prisoners in Texas during WW II. Could have been a better article, but worth a read. From Timeline via Medium.

Even Nazi prisoners of war in Texas were shocked at how black people were treated in the South

In Texas, some of the Germans actually befriended Americans of all colors