Thought I'd share a few things I found while googling around tonight! :)
The military used toilet paper to camouflage their tanks in Saudi Arabia, during the Desert Storm War.
Armored knights in medieval times raised their visors to identify themselves when they rode past their king. This custom has become the modern military salute.
The buff and blue uniforms of the officers of the Continental Army were drawn from the uniform pattern of the Virginia militia.
The army has over 400,000 enlisted soldiers and 76,000 officers.