About this Unit
The Marine Detachment aboard USS Eldorado (AGC-11) played a crucial role in amphibious operations during World War II and the Korean War. Commissioned in 1944, USS Eldorado served as a flagship and amphibious force command ship, with its Marine Detachment responsible for ship security, ceremonial duties, and supporting command staff during major operations. The detachment participated in pivotal campaigns such as the Battle of Iwo Jima and landings at Okinawa, providing critical support for planning and execution of amphibious assaults. Throughout its service, the Marine Detachment upheld the traditions and discipline of the Corps while contributing to the ship’s mission success in both combat and peacetime operations.
Historical Facts
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USS Eldorado (AGC-11) Role: The USS Eldorado was an amphibious force flagship (command ship) that served as a floating command post, with extensive communications and combat information spaces for the commanders of amphibious forces.
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Marine Detachment Duties: The Marine Detachment aboard USS Eldorado provided shipboard security, ceremonial functions, and acted as a landing force in amphibious operations.
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World War II Service: USS Eldorado, with its Marine Detachment, participated in key Pacific operations, including the invasions of Iwo Jima and Okinawa, providing command and control for amphibious assaults.
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Witness to the Iwo Jima Flag Raising: Marines from the Eldorado’s detachment witnessed the historic flag raising on Mount Suribachi during the Battle of Iwo Jima in February 1945.
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Famous Passengers: The Eldorado hosted high-ranking military figures, including Admiral Chester Nimitz and General Holland M. "Howlin' Mad" Smith, with the Marine Detachment providing security and protocol services.
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Korean War Involvement: The ship and its Marine Detachment were recommissioned for the Korean War, supporting amphibious landings such as the Inchon operation in 1950.
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Operation Crossroads: In 1946, the Eldorado served as the flagship for atomic bomb tests at Bikini Atoll, with the Marine Detachment assisting in security and logistical operations.
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Cold War Operations: During the Cold War, the Marine Detachment participated in numerous training exercises and fleet operations, helping to maintain readiness against potential Soviet threats.
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Shipboard Life: Marines aboard the Eldorado lived and trained alongside Navy personnel, maintaining weapons, standing watch, and training for ship defense and boarding operations.
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Decommissioning and Legacy: The Marine Detachment remained active until the ship was decommissioned in 1972, leaving behind a legacy of participation in major 20th-century amphibious operations and command missions.