If you are so interested in accuracy in History you should do some research. Prior to 1952 the following designation for Religious affiliation of a GI were
P = Protestant, C = Catholic, H = Hebrew (Jewish)
If a soldier had no religious affiliation this was left blank. There was never the letter 'J'. I said you were full of Crap.
However having the letter 'H' did place American Soldiers of Jewish religious affiliation serving in the European Theater of Operation in special danger.
But African American Soldiers did not need a name tag to place them in harms way if captured by the Germans which is just my point that you are full of it.
Source URL if you want to check this out Mr. Historian is below.
http://www.hakirah.org/Vol15Males.pdf
Way back in the Old South there was so much prejudice against Jews that the Confederate Secretary of State was Jewish. Judah P. Benjamin did joke that he asked his parents why they named him “Judah” when they could have just branded “Jew” across his forehead.
My Father’s dog tags had a “B” for Baptist.
Yes that it correct.