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History of Marine detachment (USS MtMckinley AGC-7)

The Marine Detachment aboard USS Mount McKinley (AGC-7) served as part of the ship’s complement during World War II and the Korean War. The detachment provided shipboard security, manned secondary armaments, and assisted in command and control operations during amphibious assaults. Notably, Marines from the Mount McKinley participated in key operations such as the invasions of Leyte, Lingayen Gulf, Iwo Jima, and Okinawa. Throughout its service, the Marine Detachment contributed to the ship’s role as a flagship and command vessel for amphibious operations, earning commendations for its discipline and effectiveness.

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ABOUT Marine detachment (USS MtMckinley AGC-7)

  • Unique Role: The Marine Detachment (MarDet) aboard USS Mount McKinley (AGC-7) served as the ship's security force, ceremonial unit, and provided protection for the ship's command staff during operations.
  • Flagship Duties: USS Mount McKinley was a command ship, often serving as flagship for amphibious operations in World War II, Korea, and Vietnam, making the MarDet a crucial element in safeguarding top commanders.
  • World War II Service: The MarDet participated in key Pacific operations, including the Battle of Okinawa, where the ship coordinated vast amphibious landings.
  • Korean War Operations: During the Inchon landings, the MarDet was aboard as Mount McKinley directed the daring amphibious assault that turned the tide of the war.
  • Ceremonial Honors: Mount McKinley’s MarDet provided rifle salutes, color guards, and honors for visiting dignitaries, including generals and admirals.
  • Vietnam War Activity: The MarDet was present as the ship played a central command role in early Vietnam War amphibious operations, such as the landings at Da Nang.
  • Disaster Relief: The detachment assisted with humanitarian and disaster relief missions, including support following typhoons and other crises in the Pacific.
  • Shipboard Life: Marines lived and trained aboard, maintaining readiness with small arms drills and shipboard security exercises, often in tight quarters alongside Navy crew.
  • Decommissioning: The MarDet was disbanded when Mount McKinley was decommissioned in 1970, ending a long history of Marine service aboard the ship.
  • Legacy: Veterans from the MarDet on USS Mount McKinley formed associations and reunions, preserving stories of their unique service at the heart of major 20th-century conflicts.

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