U.S. Marine Corps Sgt. Maj. Troy E. Black, the 19th Sergeant Major of the Marine Corps, a native of Louisville, Kentucky, gives his opening remarks during the 2022 Warfighter Development Summit at Warner Hall on Marine Corps Base Quantico, Va., April 27. The purpose of the Warfighter Development Summit is to gather feedback through shared experiences, collect data, and to develop a deep understanding of the issues affecting Marines in relation to these topics. The Warfighter Development Summit focuses on the Marines and their families. - U.S. Marine Corps Sgt. Maj. Troy E. Black, the 19th Sergeant Major of the Marine Corps, a native of Louisville, Kentucky, gives his opening remarks during the 2022 Warfighter Development Summit at Warner Hall on Marine Corps Base Quantico, Va., April 27. The purpose of the Warfighter Development Summit is to gather feedback through shared experiences, collect data, and to develop a deep understanding of the issues affecting Marines in relation to these topics. The Warfighter Development Summit focuses on the Marines and their families.

U.S. Marine Corps Cpl. Holden L. Mesimer poses for a photo at Camp Elmore, Norfolk, Va., Nov. 16, 2021. Mesimer is a Marine Air-Ground Task Force Planning specialist for Plans, Policies and Operations South. - U.S. Marine Corps Cpl. Holden L. Mesimer poses for a photo at Camp Elmore, Norfolk, Va., Nov. 16, 2021. Mesimer is a Marine Air-Ground Task Force Planning specialist for Plans, Policies and Operations South.

Secretary of Defense Ash Carter approved the Marine Corps’ Force Integration Implementation Plan, which systematically opens all military occupational specialties, March 10, 2016. This systematic plan is conditions-based and event-driven, with many actions occurring in the first 12 months. - Secretary of Defense Ash Carter approved the Marine Corps’ Force Integration Implementation Plan, which systematically opens all military occupational specialties, March 10, 2016. This systematic plan is conditions-based and event-driven, with many actions occurring in the first 12 months.