The I Marine Expeditionary Force is a Marine Air Ground Task Force (MAGTF) of the United States Marine Corps primarily composed of the 1st Marine Division, 3rd Marine Aircraft Wing, and 1st Marine Logistics Group. It is based at Marine Corps Base Camp Pendleton.
General Thomas Holcomb was a United States Marine Corps officer who served as the seventeenth Commandant of the Marine Corps from 1936 to 1943. He was the first Marine to achieve the rank of general, and was a strong supporter of racial segregation in the Marine Corps. After retiring from the Marine Corps, Holcomb served as the U.S. Envoy Extraordinary and Minister Plenipotentiary to South Africa from 1944 to 1948. One of his ancestors was Joshua Barney, a naval hero of the War of 1812.
The U.S. Marine Corps Forces, Pacific (MARFORPAC) is the Marine Corps service component command of U.S. Indo-Pacific Command. It is the largest field command in the Marine Corps and is headquartered at Camp H. M. Smith in Hawaii. The MARFORPAC area of responsibility covers more than half of the Earth's surface.
The Commander, U.S. Marine Corps Forces Command (COMMARFORCOM), headquartered at the Naval Support Activity Hampton Roads in Norfolk, Virginia, commands service retained-operating forces; executes force sourcing and synchronization to affect force generation actions in the provisioning of joint capable Marine Corps forces, and directs deployment planning and execution of service retained-operating forces in support of Combatant Commander (CCDR) and service requirements; serves as Commanding General, Fleet Marine Force, Atlantic and commands embarked Marine Corps forces; coordinates Marine Corps-Navy integration of operational initiatives and advises CDR U.S. Fleet Forces Command (USFF) on support to Marine Corps forces assigned to naval ships, bases, and installations; conducts Service directed operational tasks as required. COMMARFORCOM is also the Commander, Marine Corps Forces Northern Command (MARFORNORTH), the Marine service component command of U.S. Northern Command.
The Fleet Marine Force, Pacific (FMFPAC) is the largest maritime landing force in the world. Its units are spread across the Pacific Ocean and reports to the United States Pacific Command. It is headquartered at MCB Camp H. M. Smith, HI and directs and commands all the subordinate elements of the Navy Expeditionary Strike Force and Marine Air-Ground Task Force components that follow under the 3rd, 5th, and 7th Fleet and the Marine Corps Forces, Pacific (MARFORPAC). The Commanding General of Marine Corps Forces, Pacific is dual-posted as the Commanding General of Fleet Marine Force, Pacific. FMFPAC is under operational control of the Commander, United States Pacific Fleet (COMPACFLT), when deployed.
The Fleet Marine Force, Atlantic (FMFLANT) is an American maritime landing force that is spread across the Atlantic Ocean. It is headquartered at Naval Station Norfolk and directs and commands all the subordinate elements of the Navy Expeditionary Strike Force and Marine Air-Ground Task Force components that follow under the 2nd, 4th, and 6th Fleet and the Marine Forces Command (MarForCom). The Commanding General of Marine Forces Command is dual-posted as the Commanding General of the Fleet Marine Force, Atlantic. FMFLANT is under operational control of the Commander-in-Chief, United States Fleet Forces Command, when deployed.
Lieutenant General Richard P. Mills is a retired United States Marine Corps officer, who served as commander of the Marine Forces Reserve from 2013 to 2015 and Marine Forces North, headquartered at the Marine Corps Support Facility New Orleans. Previously he was deputy commandant for combat development and integration and commanding general, Marine Corps Combat Development Command in Quantico, Virginia, and, prior to that assignment, was commander of the I Marine Expeditionary Force (Forward)/Regional Command Southwest in Afghanistan.
David Hilberry Berger is a retired United States Marine Corps general who served as the 38th commandant of the Marine Corps from 2019 to 2023.
Robert Blake Neller is a retired United States Marine Corps four-star general who served as the 37th Commandant of the Marine Corps from 2015 to 2019.
Eric M. Smith is a United States Marine Corps general who has served as the 39th commandant of the Marine Corps since 22 September 2023. He served as acting commandant of the Marine Corps between 10 July 2023 and 22 September 2023 while awaiting Senate confirmation. Before nomination to the position he served as the 36th assistant commandant of the Marine Corps and before that as the deputy commandant for Combat Development and Integration, being succeeded by Karsten Heckl.
Robert F. Castellvi is a retired United States Marine Corps major general who most recently served as Inspector General of the Marine Corps from 9 October 2020 to 1 May 2021. As Inspector General, Castellvi oversaw matters of institutional integrity, discipline and combat readiness in the Corps, maintaining credibility through impartial and independent inspections, assessments, inquiries, investigations, teaching, and training. He is also an ex-officio Member at the North Carolina Military Affairs Full Commission in Camp Lejeune, Jacksonville, North Carolina.
Gary Lee Thomas is a retired United States Marine Corps four-star general. He was most recently the 35th Assistant Commandant of the Marine Corps. Gen Thomas is a naval aviator who flew the McDonnell Douglas F/A-18 Hornet and participated in combat operations during the Gulf War, the 2003 invasion of Iraq, and the War in Afghanistan. He has commanded at the squadron and Wing level and also led Marine Corps aviation's weapons school. Thomas is a graduate of the University of Texas at Austin and National Defense University.
George William Smith Jr. is a retired lieutenant general in the United States Marine Corps who last served as commander of the I Marine Expeditionary Force from September 2021 to August 2023. He most recently served as the Deputy Commandant for Plans, Policies, and Operations until August 2021. He previously served as Senior Military Assistant to the United States Secretary of Defense, a position for which he was nominated by James Mattis in September 2018. He was commissioned in 1985 after graduating from the University of North Carolina at Chapel Hill, through a Naval ROTC program. He is the son of George W. Smith, who was a major general in the Marine Corps.
Mark R. Wise is a retired United States Marine Corps lieutenant general who last served as the Deputy Commandant for Aviation of the United States Marine Corps. Previously, he was the Assistant Deputy Commandant for Combat Development and Integration of the United States Marine Corps and Deputy Commanding General of the Marine Corps Combat Development Command.
Christopher J. Mahoney is a United States Marine Corps general who serves as the assistant commandant of the Marine Corps. He previously served as the deputy commandant for programs and resources from 2021 to 2023.
Eric Erskine Austin is a United States Marine Corps lieutenant general who has served as the deputy commandant for combat development and integration and commanding general of the Marine Corps Combat Development Command since August 9, 2024. He most recently served as the commanding general of the 1st Marine Aircraft Wing from 2022 to 2024. He previously served as the director of the Capabilities Development Directorate in the Office of the Deputy Commandant for Combat Development and Integration.
