United States Marine Corps

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United States Marine Corps

The United States Marine Corps (USMC), also referred to as the Marines, is a branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations with the United States Navy as well as the Army and Air Force. The U.S. Marine Corps is one of the eight Uniformed services of the United States.

History[edit | edit source]

The Marine Corps was established on November 10, 1775, by the Continental Congress to serve as an infantry unit aboard naval vessels and was responsible for the security of the ship and its crew by conducting offensive and defensive combat during boarding actions and landings. The USMC has since evolved to a multi-role, highly mobile force, participating in conflicts around the globe from the shores of Tripoli to the Pacific Theater of World War II, and more recently, in Afghanistan and Iraq.

Organization[edit | edit source]

The Marine Corps is organized into four principal subdivisions: the Headquarters Marine Corps, the Operating Forces, the Supporting Establishment, and the Marine Forces Reserve. The Operating Forces are divided into three categories: Marine Corps Forces, Marine Expeditionary Forces, and Marine Security Forces, each with specific roles and responsibilities.

Headquarters Marine Corps[edit | edit source]

Headquartered in Arlington County, Virginia, the Headquarters Marine Corps consists of the Commandant of the Marine Corps, the Assistant Commandant of the Marine Corps, and various staff departments who advise and assist on matters of personnel, operations, logistics, and planning.

Operating Forces[edit | edit source]

The Operating Forces are the heart of the Marine Corps, including the Fleet Marine Forces (FMF), which are combined arms units consisting of ground, air, and logistics forces. The FMF is divided into two: the Marine Forces Pacific and the Marine Forces Atlantic.

Supporting Establishment[edit | edit source]

The Supporting Establishment provides support to the Operating Forces, including logistics, training, and administrative services. This includes the Marine Corps Logistics Base, Marine Corps Recruit Depots, and Marine Corps Base Camps.

Marine Forces Reserve[edit | edit source]

The Marine Forces Reserve (MARFORRES) is the reserve force of the Marine Corps, providing trained units and individual Marines to be mobilized for active duty in time of war, national emergency, or contingency operations.

Training[edit | edit source]

Marine Corps training is rigorous and demanding, emphasizing physical fitness, marksmanship, and small unit tactics. All recruits undergo 13 weeks of basic training at either Marine Corps Recruit Depot Parris Island in South Carolina or Marine Corps Recruit Depot San Diego in California. Following basic training, Marines attend the School of Infantry, where they are trained in their specific occupational specialties.

Culture and Traditions[edit | edit source]

The Marine Corps is renowned for its esprit de corps and strict discipline. Traditions such as the celebration of the Marine Corps Birthday on November 10th, the use of the term "Semper Fidelis" (Always Faithful), and the revered symbols of the Eagle, Globe, and Anchor reflect the pride and professionalism inherent to the Corps.

Role in National Defense[edit | edit source]

The Marine Corps, under the Department of the Navy, serves as the nation's rapid-response force, capable of conducting operations across the full spectrum of combat and humanitarian efforts. Marines are often the first on the ground in conflict zones, embodying their motto, "First to Fight."

Modernization and Future[edit | edit source]

The Marine Corps continually adapts to the changing nature of warfare and the strategic environment. This includes modernizing its equipment, tactics, and training to address new challenges, such as cyber warfare and asymmetric threats.


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Contributors: Prab R. Tumpati, MD