If you are thinking about a career in the military, after high school there are college Academies for five service branches of the military: Army, Navy, Air Force, Marines, and Coast Guard. The process of applying to military Academies is rigorous, but CollegeMapper’s timeline walks you through it. You can also join a Reserve Officers’ Training Corps (ROTC) program at your four year university. These two paths will lead you to become an officer in the military after college!