'Once a Marine, always a Marine'—Duffel Blog presents 21 job titles for former jarheads

Everyone who has earned the Eagle, Global, and Anchor knows that being a Marine isn't something you do - it's something you become. No matter how long you stay in the service or what occupation you pursue afterward, you will always be a Devil Dog first. As such, our staff has compiled a list of 21 suitable jobs for leathernecks who have hung up their un…