Named for Revolutionary War general and South Carolina native Thomas Sumter, Fort Sumter was one of nearly 50 forts built as part of the so-called Third System, a coastal defense program implemented by Congress in 1817.
In simple terms, the U.S. Armed Forces are made up of the five armed service branches: Air Force, Army, Coast Guard, Marine Corps, and Navy.
A military staff (often referred to as general staff, army staff, navy staff, or air staff within the individual services) is a group of officers, enlisted and civilian personnel that are responsible for the administrative, operational and logistical needs of its unit.