Ronald L. Green

Ronald L. Green is a United States Marine who served as the 18th Sergeant Major of the Marine Corps. He succeeded Micheal Barrett on February 20, 2015, and relinquished the post to Troy E. Black on July 26, 2019. As the Sergeant Major of the Marine Corps, Green was the highest-ranking non-commissioned officer in the United States Marine Corps. Green retired during the summer of 2019. As of October 2026, Green served as the sergeant major of the Marine Corps with the longest tenure, at 4 years and 156 days. Henry H. Black is the shortest-tenured, at 1 year and 304 days.

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