Old Navy Chief once told me a reason for the black crescent shape on the cases, boxes, or any package of food stuffs used by the US and Allied forces. This was like 40 years ago and I have slept since I heard the tale. Does anyone know the story as to Why its a crescent and where it came from? I would really appreciate it as I have a talk to make at the WWII museum in a few months and this would be an excellent oolie. I am thinking the story took place either around WWI or just prior. I could sure use the help.

I am not worried about C's K's or MRE's just the black crescent on ALL packaging of food stuffs.

Thanks in advance.