Note that our CG was out at dawn in his staff car visiting obscure guard posts on Christmas morning - a very nice thing for a general to be doing.
That must be a Marine Corps tradition.
My son was in Security Forces at a submarine base one Christmas eve night. As said up thread, this was serious business.
They were posted as far from civilization as you could get and no one was ever crazy enough to get anywhere nearby. So they were surprised to see a figure approach. After the formalities he turned out to be the company commander.
"Did you men get cookies?"
"No sir. No cookies."
He said "Merry Christmas" and left. About a half hour later a harried cook appeared with hot coffee and a few dozen cookies telling how he'd gotten his behind reamed for not delivering them earlier.