There's a neat trilogy of books about the experiences of a young Southern American, growing up on a farm owned by his family and among sharecroppers, going into basic training and over to Europe, The author is Ferrol Sams and the first book in the series is When All The World Was Young

In the book on the war, he recounts a European Jew telling him that at the close of the war, when many people thought they were safe, someone got onto the American flyers' frequency and called in an air strike on a group of Jews.

So I suppose this sort of thing was liable to happen to any number of people, along with the usual errors in identification and coordinates.