Veterans

The Marine Corps does not have an academy. Naval Academy usually choose either the Navy or Marine Corp but they could go into the Army, Airforce or become a Space Cadet....

To answer your question more specifically, most of the officers in any of the service branches to not attend the service academies. However, an Academy ring nearly assures rapid promotion and good assignments. It is a fraternity that looks after its own, and many times regardless of the fitness or ability of the graduate.