United States Marine Corps
maritime land force service branch of the United States Armed Forces
The United States Marine Corps (USMC), also referred to as the United States Marines or simply the Marines, is the naval infantry service branch of the United States Armed Forces. The service is responsible for conducting expeditionary and amphibious warfare through combined arms, implementing its own infantry, artillery, aerial, and special operations forces. The U.S. Marine Corps is a part of the United States Department of Defense and is one of the six armed forces of the United States and one of the eight uniformed services of the United States.
The Marine Corps has been part of the United States Department of the Navy since 30 June 1834, along with its sister service, the United States Navy. The USMC operates installations on land and aboard sea-going amphibious warfare ships around the world. Several of the Marines' tactical aviation squadrons, primarily Marine Fighter Attack squadrons, are embedded in Navy carrier air wings and operate from aircraft carriers. These comprise the bulk of the US military's V/STOL aircraft, with 313 V-22 Ospreys, 183 F-35B Lightning IIs, and 78 AV-8B Harrier IIs as of 2025.
The history of the Marine Corps began when two battalions of Continental Marines were formed on 10 November 1775 in Philadelphia as a service branch of infantry troops capable of fighting both at sea and on shore. In the Pacific theater of World War II, the Corps took the lead in a massive campaign of amphibious warfare, advancing from island to island. As of December 2024, the USMC has around 169,000 active duty members and some 33,000 personnel in reserve.
Begin with the source’s own compact description: “United States Marine Corps” is maritime land force service branch of the United States Armed Forces. The dossier treats that line as a proposition to test through United, States and Marine, not as a finished interpretation.
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The phrase “maritime land force service branch of the United States Armed Forces” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 21, 2026. The linked authority identifier is Q11218. VIAF identifies the subject as 153063409. The Library of Congress control number is n78095328. 5 of 7 selected statements include explicit references; 5 carry qualifiers and 1 use preferred rank. The first chronological checks are 1834, 2025, 1775 and 2024.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “United States Marine Corps” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.