Well, all I can say is that, when I was in the U.S. Army in the 1970's, I
saw plenty of cooks from the U.S., British, and West German armies, and
they all wore white aprons to serve food, even in mess tents in the field,
and the U.S. cooks wore white uniforms with white aprons to serve food
in the Mess Halls/Cafeterias on U.S. Army posts.