United States Marine Corps

===Leadership===
{{Multiple image
| align = right
| direction = horizontal
| width = 125
| image1 = Gen Smith Official Photo V1.jpg
| width1 =
| alt1 = color photograph of Eric M. Smith
| caption1 = [[Eric Smith (general)|Eric M. Smith]], <br />Commandant of the Marine Corps
| image2 = Gen Christopher J. Mahoney (2).jpg
| width2 =
| alt2 = color photograph of Christopher J. Mahoney
| caption2 = [[Christopher J. Mahoney]], <br />Assistant Commandant of the Marine Corps
| image3 = SMMC Carlos A. Ruiz.jpg
| width3 =
| alt3 = color photograph of Carlos A. Ruiz
| caption3 = [[Carlos A. Ruiz]], <br />[[Sergeant Major of the Marine Corps]]
| total_width =
}}

The [[Commandant of the United States Marine Corps|Commandant of the Marine Corps]] is the highest-ranking officer of the Marine Corps, unless a Marine is either the chairman or vice chairman of the [[Joint Chiefs of Staff]]. The commandant has the [[Title 10 of the United States Code|U.S. Code Title 10]] responsibility to staff, train, and equip the Marine Corps and has no command authority. The commandant is a member of the Joint Chiefs of Staff and reports to the [[United States Secretary of the Navy|Secretary of the Navy]].<ref>Estes (1986), p. 60</ref>

The [[Assistant Commandant of the Marine Corps]] acts as the chief deputy to the commandant. The [[Sergeant Major of the Marine Corps]] is the senior enlisted Marine and acts as an adviser to the commandant. Headquarters Marine Corps comprises the rest of the commandant's counsel and [[staff (military)|staff]], with deputy commandants that oversee various aspects of the Corps assets and capabilities. The 39th and current Commandant is [[Eric Smith (general)|Eric M. Smith]], while the 20th and current Sergeant Major is [[Carlos A. Ruiz]].<ref>{{Cite web|url=https://www.hqmc.marines.mil/smmc/Biography/|title=Biography|website=www.hqmc.marines.mil|access-date=15 October 2021|archive-date=16 July 2021|archive-url=https://web.archive.org/web/20210716010153/https://www.hqmc.marines.mil/smmc/Biography/|url-status=live}}</ref>