I read an article about this in the New York TImes Magazine section quite a while ago. In this, POWs with Jewish names were sent to concentration camps. Imagine the horror...
Though his dog tags had his religion on them, he was never treated differently by the Germans...perhaps because he was an officer, perhaps because he was not part of the resistance but uniformed and fighting with the US Army.
The names in this article, Bowen and Freeman, aren’t particularly Jewish. I knew a Jewish Friedman and a WASP Freeman. Bowen is a Welsh name. And this article doesn’t say anything about whether they were Jewish or not.
A horrible fate and horrible to have your country deny it. It still doesn’t make sense what interest the government did have in denial.