What does an E-4 rank in the Marine Corps denote?

In the Marine Corps, the E-4 rank is classified as Corporal. This rank signifies a leadership position among enlisted personnel and indicates that the individual has developed certain competencies and experience. Typically, a Corporal is expected to serve as a team leader, overseeing the discipline and performance of junior Marines.

The title of Corporal encompasses responsibilities such as mentoring newer Marines and ensuring the viability of their unit operations. Achieving this rank often requires completing training and demonstrating leadership capabilities, marking a significant step in a Marine's career.

While Private First Class is an E-2 rank and signifies a very junior enlisted status, Sergeant, which is an E-5 rank, denotes a higher leadership role with even more responsibilities. Gunnery Sergeant is an E-7 rank, representing a much more senior position within the enlisted ranks.