USMC
378,909 members•1,273 units
Opening branch overview
Building the branch home surface
Loading branch highlights, featured unit context, and gallery moments.
Overview
Members
Units
Over 3,064,780 active members
378,909 members•1,273 units
Building the branch home surface
Loading branch highlights, featured unit context, and gallery moments.
Building the branch members surface
Loading branch members, era browse tools, and directory controls.
1:8th Marines
U.S. Marine Corps
The 1st Battalion, 8th Marines (1/8), known as "The Beirut Battalion," is an infantry battalion of the United States Marine Corps, formed in 1940. It saw extensive combat during World War II, notably at Guadalcanal, Tarawa, Saipan, Tinian, and Okinawa. In 1983, 1/8 was deployed to Beirut, Lebanon, as part of a multinational peacekeeping force, and tragically suffered heavy casualties in the Beirut barracks bombing. Since then, 1/8 has participated in numerous operations, including Desert Storm, Operation Iraqi Freedom, and Operation Enduring Freedom in Afghanistan, upholding its legacy of service and sacrifice.
3:4th Marines
U.S. Marine Corps
The 3rd Battalion, 4th Marines (3/4), known as "Thundering Third," is an infantry battalion of the United States Marine Corps with a storied history dating back to its activation in 1925. The battalion saw extensive combat in World War II, participating in major battles such as Guadalcanal, Guam, and Okinawa. During the Vietnam War, 3/4 earned distinction in numerous operations, including the famous seizure of Hill 881 during the Battle of Khe Sanh. In the 21st century, 3/4 deployed multiple times in support of Operations Iraqi Freedom and Enduring Freedom, continuing its legacy of valor and adaptability.
1:23rd Reserve Unit
U.S. Marine Corps
The 1st Battalion, 23rd Marines (1/23rd Reserve Unit) is a distinguished infantry battalion within the United States Marine Corps Reserve. Activated during World War II, the unit saw significant combat in the Pacific Theater, notably participating in the battles of Kwajalein, Saipan, Tinian, and Iwo Jima. Since then, 1/23 has been mobilized for numerous operations, including the Gulf War, Operation Iraqi Freedom, and Operation Enduring Freedom, providing critical support and combat capabilities. Headquartered in Houston, Texas, 1/23rd continues to uphold its legacy of readiness and service as part of the 4th Marine Division.
1ST BATTALION, 12TH MARINES
U.S. Marine Corps
The 1st Battalion, 12th Marines (1/12) was activated on September 1, 1942, as part of the 3rd Marine Division during World War II. It participated in major campaigns in the Pacific Theater, including Bougainville, Guam, and Iwo Jima, providing artillery support for infantry operations. Following World War II, the battalion was deactivated and reactivated several times, serving in the Vietnam War and later in operations in the Western Pacific and the Middle East. Throughout its history, 1/12 has remained a key artillery unit of the United States Marine Corps, demonstrating versatility and combat effectiveness in a wide range of conflicts.
2:5th Marines
U.S. Marine Corps
The 2nd Battalion, 5th Marines (2/5), was activated in July 1917 and is the most decorated battalion in the United States Marine Corps. The unit first distinguished itself during World War I in battles such as Belleau Wood and the Meuse-Argonne Offensive. In World War II, 2/5 fought in major campaigns including Guadalcanal, Peleliu, and Okinawa. Since then, the battalion has served in the Korean and Vietnam Wars, Operations Desert Storm, Iraqi Freedom, and Enduring Freedom, consistently demonstrating valor and adaptability across diverse combat environments.
3rd Marine Air wing....
U.S. Marine Corps
The 3rd Marine Aircraft Wing (3rd MAW) was activated in 1942 during World War II, providing crucial air support in the Pacific Theater. Over the decades, the wing has played a key role in major conflicts, including the Korean War, Vietnam War, Operation Desert Storm, and the Global War on Terror. Headquartered at Marine Corps Air Station Miramar, California, 3rd MAW delivers combat-ready aviation forces capable of expeditionary operations. Its diverse squadrons operate aircraft such as the F/A-18 Hornet, MV-22 Osprey, and AH-1Z Viper, ensuring air superiority and close air support for Marine Corps missions worldwide.
MCRD SAN DIEGO
U.S. Marine Corps
Marine Corps Recruit Depot San Diego (MCRD San Diego) was established in 1921 as a key training facility for the United States Marine Corps on the West Coast. Originally serving as a base for Marine activities during World War I, it became the primary location for recruit training west of the Mississippi River. Throughout World War II, MCRD San Diego processed and trained tens of thousands of new Marines, playing a crucial role in building the Corps’ wartime strength. Today, it continues its legacy as one of only two Marine Corps recruit depots, responsible for transforming thousands of young men into Marines each year.
2nd MAW
U.S. Marine Corps
The 2nd Marine Aircraft Wing (2nd MAW) was commissioned on July 10, 1941, at Marine Corps Air Station Cherry Point, North Carolina. During World War II, the unit played a crucial role in the Pacific Theater, providing air support in key campaigns such as the Battle of Okinawa and the capture of Iwo Jima. In subsequent decades, 2nd MAW participated in the Korean War, Vietnam War, Operation Desert Storm, and the Global War on Terror, supporting Marine operations with fixed-wing and rotary aircraft. Today, the 2nd MAW remains a vital component of the United States Marine Corps, delivering air support, assault support, and reconnaissance capabilities to Marine Air-Ground Task Forces worldwide.
2:9th Marines
U.S. Marine Corps
The 2nd Battalion, 9th Marines (2/9), known as "Hell in a Helmet," was activated during World War II in 1942 and served with distinction in the Pacific, notably at Bougainville, Guam, and Iwo Jima. The battalion saw heavy combat during the Vietnam War, participating in major operations such as Operation Dewey Canyon and defending Khe Sanh. After several periods of deactivation and reactivation, 2/9 served in the Gulf War and later participated in deployments supporting the Global War on Terrorism. The battalion was last deactivated in 2015 as part of the Marine Corps' force structure realignment.
U.S. Marine Corps Descendant (2026 - Present)
U.S. Marine Corps Spouse (2026 - Present)
U.S. Marine Corps Military Retiree (2026 - Present)
U.S. Marine Corps Other (2025 - Present)