Further reading about the data set indicates that these records were compiled by the National Jewish Welfare Board, as part of the Bureau of War Records. This was an organization which documented the role of the Jewish-American service personnel. The cards were made of information extracted from service files. They had a color-coded system: the red strip on the card of Jack Francis indicates wounded. The explanation states that the cards might even indicate whether the subject turned out not to be Jewish, although that isn't the case here.
This, combined with the combat history book (a lot like a yearbook of his unit), gives us some excellent detail about Jack's time in the service, despite the loss of so many of the WWII personnel files in the fire of 1973. Of particular interest is the date and page number on this card, and what other information they might lead to.
Jack always said that the kind of religion you practiced didn't matter in a foxhole...apparently, he was right.
Another example of casting the net wider for new information.