About this Unit
Company D, 4th Battalion, 9th Infantry Regiment (“Manchu”), served with distinction as part of the 25th Infantry Division during the Vietnam War. Deployed to Vietnam in 1966, the unit operated primarily in the Cu Chi, Tay Ninh, and Ho Bo Woods areas, engaging in search-and-destroy missions, ambushes, and security operations against Viet Cong and North Vietnamese Army forces. The “Manchus” faced intense combat, earning a reputation for bravery and resilience in operations such as Junction City and the Tet Offensive. Throughout their deployment, Co. D, 4/9 Inf endured significant casualties but contributed to the overall mission with honor and valor before the battalion’s redeployment in 1970.
Historical Facts
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Nickname - "Manchu": The 4th Battalion, 9th Infantry Regiment, including Company D, carried the nickname "Manchu," a legacy from the regiment’s service in the Boxer Rebellion in China (1900). Their motto was "Keep Up the Fire!"
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Assigned to the 25th Infantry Division: During the Vietnam War, Co. D, 4/9th Inf ("Manchu") served as part of the 25th Infantry Division, a major U.S. Army formation in the conflict.
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Cu Chi Base Camp: The Manchu battalion was based at the infamous Cu Chi base camp, known for its elaborate Viet Cong tunnel complexes and heavy fighting.
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Operation Junction City: In early 1967, Co. D participated in Operation Junction City, one of the largest airborne operations of the war, targeting enemy strongholds in War Zone C.
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Battle of Fire Support Base Gold ("Attack at Soui Tre"): Elements of the 4/9th, including Co. D, played a role in the defense and relief of FSB Gold during a massive Viet Cong/NVA assault on March 21, 1967.
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Tet Offensive Action: During the Tet Offensive in 1968, Co. D and the Manchus were involved in heavy fighting as the enemy attacked major cities and bases in South Vietnam.
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Riverine Operations: The 4/9th conducted joint operations with the Mobile Riverine Force, patrolling the waterways and engaging the enemy in the Mekong Delta's challenging terrain.
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Distinguished Service: Soldiers from Co. D, 4/9th Inf earned numerous awards for valor, including Silver Stars and Bronze Stars, for their actions in Vietnam.
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Heavy Casualties: The Manchu battalion, including Company D, suffered some of the highest casualty rates in the 25th Infantry Division, with hundreds killed and wounded during their Vietnam deployment.
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Legacy and Reunions: Veterans of Co. D, 4/9th Inf maintain a strong brotherhood today, holding regular reunions and keeping the history and memory of their service alive through organizations and websites.