The worlds finest Navy, comprised of ships to transport Marines to the middle of nowhere to kill men women and children who are widely untrained, planes to bomb shit so the marines can walk into the smoldering crater and act like they actually did something useful like they used to a hundred years ago, and land based forces to keep retard marines from getting blown up by IEDs or dying from extreme mental retardation while they act like they've ever done something.
A branch of the military that goes out to sea in large vessels where they could all die together without having the chance to scatter like hollywood marines.

When you eat dirt for the first time and leave your family to build a shack in the woods