U.S. Marine Corps Sgt. Maj. Troy E. Black, the 19th Sergeant Major of the Marine Corps, addresses Marines with 3rd Assault Amphibian Battalion, 1st Marine Division at the battalion’s maintenance bay during his visit to Marine Corps Base Camp Pendleton, California, Feb. 7, 2023. The Sergeant Major of the Marine Corps visited units across I Marine Expeditionary Force, speaking to Marines about talent management, force design, quality of life and the importance of maturing the force in the infantry. - U.S. Marine Corps Sgt. Maj. Troy E. Black, the 19th Sergeant Major of the Marine Corps, addresses Marines with 3rd Assault Amphibian Battalion, 1st Marine Division at the battalion’s maintenance bay during his visit to Marine Corps Base Camp Pendleton, California, Feb. 7, 2023. The Sergeant Major of the Marine Corps visited units across I Marine Expeditionary Force, speaking to Marines about talent management, force design, quality of life and the importance of maturing the force in the infantry.