Corporal (Cpl) is the fourth enlisted rank in the U.S. Marine Corps, ranking immediately above
Lance Corporal and immediately below
Sergeant. The Marine Corps, unlike the Army, has no other rank at the pay grade of E-4. Corporal is the lowest grade of non-commissioned officer in the U.S. Marine Corps, though promotion to Corporal traditionally confers a large jump in authority and responsibility compared to promotion from Private through Lance Corporal. It is also the first Marine rank requiring competition among peers rather than simple "time in grade" promotions and therefore sometimes difficult to attain. Theoretically, Marine Corporals generally serve as "fire-team leaders," commanding a 4-man team or unit of similar size. In practice, however, the billet of fire team leader is generally held by a Lance Corporal, while Corporals serve in the squad leader billet that would normally be held by a Sergeant (E-5) in infantry units. In support units, they direct the activities of junior Marines and provide technical supervision. Because of its emphasis on small-unit tactics, the Marine Corps usually places Corporals in billets where other services would normally have an E-5 or E-6 in authority. Similarly, the term "Strategic Corporal" refers to the special responsibilities conferred upon a Marine Corporal.
