The four branches of the US military operate their own service academies. They are all four-year institutions. Competition to get into these schools is highly competitive. Students become commissioned officers immediately upon graduation. Those who are accepted get full scholarships and a small monthly allowance. For more information, speak to your HS guidance counselor or contact: The Coast Guard Academy in Connecticut at 800-883-8372, The U.S. Military Academy at West Point, N.Y. at 800-822-8762, The Naval Academy in Maryland at 800-638-9156, The Air Force Academy in Colorado at 800-443-9266.