This Military Hierarchy Chart depicts the ranks of the military. To learn the military positions, you must first understand what each service calls the E and O levels and their abbreviations and how they appear in the symbols, also known as insignias. For officers, the Air Force, Army, and Marine Corps symbols are nearly identical, while the Navy and Coast Guard symbols are almost identical. The ranking order is also shown in this Military Hierarchy Chart. Private, private second class, private first class, specialist, corporal, sergeant, staff sergeant, sergeant first class, master sergeant, first sergeant, sergeant major, command sergeant major, and sergeant major are the Army's 13 enlisted ranks.
