Professional Military Education
Craig Henry has a long post comparing the education and training of military officers as contrasted with that of private business executives. It’s well worth reading.
There’s no other profession of which I’m aware that so heavily invests in educating its leaders. With a handful of exceptions, American military officers have a bachelor’s degree and some fairly intensive pre-commissioning training before they put on a uniform for real. They then immediately attend several months of professional training before their first assignment. For an Army officer, typical PME includes:
Officers usually pick up a master’s degree somewhere along the line, usually as senior captains. Additionally, as Craig notes, officers often get teaching assignments at one of the above schools. Or at one of the military academies, ROTC, or specialized schools. All in all, it is not at all unusual for an officer to spend over a third of his career in a school environment.