<P> In the U.S. Marine Corps , sergeant major is the ninth and highest enlisted rank , just above first sergeant , and equal in grade to master gunnery sergeant , although the two have different responsibilities . A sergeant major typically serves as the unit commander 's senior enlisted adviser and to handle matters of discipline and morale among the enlisted Marines . The Sergeant Major of the Marine Corps is chosen by the Commandant of the Marine Corps to serve as his adviser and is the preeminent and highest ranking enlisted Marine with an order of precedence of a lieutenant general . </P>
<P> In the U.S. Marine Corps , sergeant major is the ninth and highest enlisted rank , just above first sergeant , and equal in grade to master gunnery sergeant , although the two have different responsibilities . A sergeant major typically serves as the unit commander 's senior enlisted adviser and to handle matters of discipline and morale among the enlisted Marines . The Sergeant Major of the Marine Corps is chosen by the Commandant of the Marine Corps to serve as his adviser and is the preeminent and highest ranking enlisted Marine with an order of precedence of a lieutenant general . </P>
what is the highest enlisted rank in the marine corps
what is the highest enlisted rank in the marine corps
sergeant major
sergeant major