About this Unit
Naval Mobile Construction Battalion NINE (MCB-9), known as the "Fighting Ninth," was a distinguished unit of the United States Navy Seabees. Commissioned during World War II in 1942, MCB-9 played a vital role in constructing airfields, bases, and other infrastructure throughout the Pacific Theater, supporting major operations in locations such as the Solomon Islands and the Philippines. After World War II, the battalion was decommissioned but later reactivated, serving with distinction in conflicts including the Korean and Vietnam Wars, where they built and maintained critical military facilities. MCB-9 continued to serve in peacetime construction and humanitarian missions until its final decommissioning in 1994.
Historical Facts
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Origins: Mobile Construction Battalion Nine (MCB-9), also known as "Seabees," was first commissioned during World War II on July 15, 1942, at Camp Allen, Norfolk, Virginia.
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World War II Service: MCB-9 was deployed to the Pacific Theater, participating in the construction of advance bases in locations such as Guadalcanal, New Guinea, Manus, and the Philippines, playing a crucial role in supporting Allied operations.
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Korean War Contributions: Reactivated for the Korean War, MCB-9 was sent to Japan and Korea, where they built airfields, roads, and support facilities essential for United Nations forces.
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Vietnam War Deployments: The battalion served multiple tours in Vietnam, constructing bases, airfields, and fortifications under hazardous conditions, particularly at Da Nang, Chu Lai, and Phu Bai.
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Nickname "Striking Ninth": MCB-9 earned the nickname "Striking Ninth" for its reputation as a highly mobile and effective construction unit, often being one of the first Seabee battalions deployed to new and dangerous locations.
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Humanitarian Missions: Outside of combat, MCB-9 engaged in numerous humanitarian projects, including building schools, clinics, and infrastructure in locations like the Philippines, Diego Garcia, and Okinawa.
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Battle Efficiency Awards: The battalion received multiple "Battle E" awards for efficiency and excellence, highlighting its distinguished record among Seabee units.
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Operation Deep Freeze: MCB-9 participated in Operation Deep Freeze, the U.S. mission to Antarctica, helping construct scientific research stations in some of the harshest conditions on earth.
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Decommissioning and Legacy: MCB-9 was decommissioned in 1994, but its legacy continues through its alumni and in historical commemorations by Seabee organizations.
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Symbolic Mascot: The battalion's mascot was a fierce bee wielding a hammer and wrench, symbolizing the Seabee motto: "We Build, We Fight."
