III Marine Expeditionary Force is a formation of the Marine Air-Ground Task Force of the United States Marine Corps. It is forward-deployed and able to rapidly conduct operations across the spectrum from humanitarian assistance and disaster relief (HA/DR) to amphibious assault and high-intensity combat.
The 1st Marine Division is a Marine division of the United States Marine Corps headquartered at Marine Corps Base Camp Pendleton, California. It is the ground combat element of the I Marine Expeditionary Force.
The 4th Marine Division is a reserve division in the United States Marine Corps. It was raised in 1943 for service during World War II, and subsequently fought in the Pacific against the Japanese. Deactivated after the war, the division was re-formed in 1966 and elements of the division deployed during the Gulf War in 1990–1991, as well as during the Iraq War. It is currently the ground combat element of the Marine Forces Reserve and is headquartered in New Orleans, Louisiana, and has units throughout the United States.
The 1st Marine Regiment is an infantry regiment of the United States Marine Corps based at Marine Corps Base Camp Pendleton, California. The regiment is under the command of the 1st Marine Division and the I Marine Expeditionary Force. The 1st Marine Regiment is also sometimes referred to as "Regimental Combat Team 1" or "Inchon".
United States military bands include musical ensembles maintained by the United States Army, United States Marine Corps, United States Navy, United States Air Force, and United States Coast Guard. More broadly, they can also include musical ensembles of other federal and state uniformed services, including the Public Health Service and NOAA Corps, the state defense forces, and the senior military colleges.
The 5th Marine Regiment is an infantry regiment of the United States Marine Corps based at Marine Corps Base Camp Pendleton, California. It is the most highly decorated regiment in the Marine Corps and falls under the command of the 1st Marine Division and the I Marine Expeditionary Force.
1st Battalion, 1st Marines (1/1) is an infantry battalion in the United States Marine Corps based out of Camp Pendleton, California, consisting of anywhere from 800 to 2,000 Marines and Sailors, but the number fluctuates depending on the battalion's mission. Falling under the command of the 1st Marine Regiment and the 1st Marine Division, they are commonly referred to as "The first of the First".
3rd Battalion, 1st Marines (3/1) is an infantry battalion in the United States Marine Corps based out of Camp Horno on Marine Corps Base Camp Pendleton, California. Nicknamed the "Thundering Third", the battalion consists of approximately 1,200 Marines and Sailors and falls under the command of the 1st Marine Regiment and the 1st Marine Division.
The 1st Marine Logistics Group is a logistics unit of the United States Marine Corps and is headquartered at Marine Corps Base Camp Pendleton, California, with several subordinate elements located at Marine Corps Air Station Yuma and Marine Corps Air Ground Combat Center Twentynine Palms. It is the logistics combat element of the I Marine Expeditionary Force.
1st Battalion, 5th Marines (1/5) is an infantry battalion in the United States Marine Corps based out of Marine Corps Base Camp Pendleton, California consisting of approximately 800 Marines and sailors. Nicknamed Geronimo, it falls under the command of the 5th Marine Regiment and the 1st Marine Division. The battalion was formed in 1914 and has served in every major conflict that the United States has been involved in since then.
In the United States Marine Corps, a Marine Air–Ground Task Force is 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 is structured to accomplish a specific mission. The MAGTF was formalized by the publishing of Marine Corps Order 3120.3 in December 1963, "The Marine Corps in the National Defense, MCDP 1-0". It stated:
A Marine air–ground task force with separate air ground headquarters is normally formed for combat operations and training exercises in which substantial combat forces of both Marine aviation and Marine ground units are included in the task organization of participating Marine forces.
Fleet Band Activities (FBA), formerly the Navy Music Program (NMP), is the central management office for nine active-duty fleet bands of the United States Navy. It is located at Naval Support Activity Mid-South in Millington, Tennessee. FBA has the responsibility of coordinating the assignment and distribution of personnel, equipment and funding to the worldwide activities of navy military bands. It also is responsible for managing the application and audition process for potential navy musicians. Personnel from the FBA work directly with the Bureau of Naval Personnel to meet our musician requirements for the fleet.
1st Battalion, 11th Marines (1/11) is an artillery battalion comprising four firing batteries and a Headquarters battery. The battalion is stationed at the Marine Corps Base Camp Pendleton in California. Its primary weapon system is the M777 lightweight howitzer. The battalion is under the command of the 11th Marine Regiment, part of the 1st Marine Division.
5th Battalion, 11th Marines (5/11) was a High Mobility Artillery Rocket System (HIMARS) battalion consisting of four Firing Batteries and a Headquarters Battery. The battalion is stationed at Marine Corps Base Camp Pendleton, California. It is the first active duty HIMARS Unit in the Marine Corps. They fall under the command of the 11th Marine Regiment and the 1st Marine Division. This is the only battalion in the 11th Marine Regiment not using the M777A2 lightweight howitzer.
3rd Assault Amphibian Battalion is one of two active duty assault amphibian battalions in the United States Marine Corps. The battalion is tasked with transporting US Marine forces and their equipment from assault ships to shore, and equipped with the Amphibious Combat Vehicle (ACV), which replaced the Amphibious Assault Vehicle (AAV). The battalion is part of the 1st Marine Division and the I Marine Expeditionary Force. The unit is based in Camp Pendleton in California.
4th Tank Battalion was an armored battalion of the United States Marine Corps Reserve. Their primary weapon system was the M1A1 Abrams main battle tank and they were part of the 4th Marine Division and Marine Forces Reserve. The unit headquarters was at the Navy and Marine Corps Reserve Center San Diego, California, but other units in the battalion were located throughout the United States. Until the decision to divest the Marine Corps' armor capability, 4th Tank Battalion was the largest tank battalion in the US military with six lettered companies and an H&S Company.
The 1st Battalion 9th Marines (1/9) was an infantry battalion of the United States Marine Corps. Formed during World War I, it served until the mid-2000s when it was deactivated to make room for one of three light armor reconnaissance battalions. During the Vietnam War, 1/9 sustained an especially high casualty rate as they faced extraordinary challenges and hardships during their tour. General Vo Nguyen Giap promised President Ho Chi Minh that he would wipe out the 1st Battalion, 9th Marines, as a present for the leader’s birthday. In describing the fate that awaited the Marines in the valley, Giap allegedly used the term "Di Bo Chet", translated as the “Walking Dead”. He viewed that the Marines should be considered already dead, just not buried yet. However, 1st Battalion, 9th Marines, proudly and defiantly adopted “The Walking Dead” as its nickname due to the unit's persistence and resilience.
2nd Battalion, 9th Marines (2/9) was an infantry battalion of the United States Marine Corps. Formed during World War I, the unit played an instrumental role in the defeat of the Japanese forces in the Battles of Guam and Iwo Jima during World War II. The battalion distinguished itself in the defense of Khe Sanh during the Vietnam War, and later participated in an ill-fated invasion of Koh Tang Island in Southeast Asia, with the intention of rescuing the crew of SS Mayaguez. During Operation Desert Storm, the battalion served as the lead battalion for the III Marine Expeditionary Force.
The 2nd Marine Aircraft Wing Band is a United States Marine Corps Air-Ground Task Force regional military band located at Marine Corps Air Station Cherry Point. It performs at basic state functions, civilian ceremonies, and military parades in the region, presenting musical support and entertainment for unit/community events.
The Marine Corps Musician Enlistment Option Program (MEOP) is the central organized body overseeing the active-duty military bands of the United States Marine Corps. Marine Corps field bands can be found in the Southeast United States, Southern California, and the Pacific-Asia region. While serving with their bands, Marines perform throughout the continental United States and travel internationally to locations ranging from Beijing to Paris. These units take part in activities such as retirement ceremonies, the Marine Corps Birthday Ball, funerals, change of commands, and civil/military parades. It is one of two music programs in the Department of the Navy, with the other being Fleet Band Activities.
United States Marine Corps 
1st Marine Division 
