In reality, if you think about it, the Marine Corps pretty much molds you into something that can survive the Apocalypse! You're pretty much a
bum that can shoot weapons,
eat anything, shit anywhere, and
sleep anywhere. You can essentially run on crumbs, water, motrin, and nicotine and you can go weeks or months w/o a shower! Moreover, on the plus side, you lose ALL Morality so shooting and looting to survive is, eh, whatever.
US Marines are basically the
human version of a raccoon.
TRASH PANDAS UP!
The U.S. Marine Corps can
live anywhere and survive on anything and have been doing it so
long that it is inherent in our
DNA!