The United States 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

United States Pacific Command

The United States Pacific Command is a Unified Combatant Command of the United States armed forces responsible for the Pacific Ocean area. It is led by the Commander, Pacific Command , who is the supreme military authority for the various branches of the Armed Forces of the United States serving...

. It is headquartered at MCB Camp H. M. Smith, HI

Camp H. M. Smith

Camp H. M. Smith is a United States Marine Corps installation in the Hawaiian town of Aiea on the island of Oahu, near the community of Halawa Heights...

 and directs and commands all the subordinate elements of the Navy Expeditionary Strike Force

Expeditionary Strike Group

The Expeditionary Strike Group, or ESG, is a concept introduced in the U.S. military in the early 1990s, based on the Naval Expeditionary Task Force. The U.S. Navy fields 12 Expeditionary Strike Groups and 11 Carrier Strike Groups, in addition to surface action groups...

 and Marine Air-Ground Task Force

Marine Air-Ground Task Force

The Marine Air-Ground Task Force is a term used by the United States Marine Corps to describe the principal organization for all missions across the range of military operations. MAGTFs are a balanced air-ground, combined arms task organization of Marine Corps forces under a single commander that...

 components that follow under the 3rd, 5th, and 7th Fleet

United States Seventh Fleet

The Seventh Fleet is the United States Navy's permanent forward projection force based in Yokosuka, Japan, with units positioned near Japan and South Korea. It is a component fleet force under the United States Pacific Fleet. At present, it is the largest of the forward-deployed U.S. fleets, with...

 and the Marine Forces, Pacific (MarForPac). It is under operational control of the Commander, United States Pacific Fleet

United States Pacific Fleet

The United States Pacific Fleet is a Pacific Ocean theater-level component command of the United States Navy that provides naval resources under the operational control of the United States Pacific Command. Its home port is at Pearl Harbor Naval Base, Hawaii. It is commanded by Admiral Patrick M...

 (ComPacFlt), when deployed.