Joe Burns, Ph.D.... And remember: Do you know why Marines are sometimes called "leathernecks?" It has nothing to do with sunburn, as I have heard before. It's a name given to them by Navy personnel. Marines used to have a piece of leather sewn into the back of their uniform collars to deflect sword strokes.

Here's another military fact. The name of the "Jeep" automobile came from the fact that the original versions were delivered to the Army with the letters "G.P." painted on the side. The letters stood for "General Purpose." It was simply shortened to Jeep.

And one more...the acronym SNAFU is a military term. At least that's where it originated. It stands for "Situation Normal, All Fouled Up."

Of course, young men in the military tend to change out one of the words on occasion.