Private Carl Lorraine mailed this card to Mr. and Mrs. Edward Sanders from Camp Claiborne, Louisiana. It was postmarked December 22, 1942, so Carl most likely spent his Christmas at camp. The front shows a sailor and two soldiers singing Christmas carols. This is the only Christmas related military card that I have.
Obviously, this is different from most postcards because the front is postmarked. The back is completely blank (except for his message). I am not sure if there is a different name for cards like this, but I still like them!