About this Unit
The 91st Engineer Battalion was first constituted on 1 October 1933 in the Regular Army and activated on 10 February 1941 at Camp Shelby, Mississippi. During World War II, the unit served with distinction in the Pacific Theater, participating in campaigns in New Guinea, Leyte, and Luzon, where it provided critical combat engineering support. After inactivation following the war, the battalion was reactivated during the Cold War and later supported operations in Operation Desert Storm and Operation Iraqi Freedom. Over its history, the 91st Engineer Battalion has earned numerous campaign streamers and awards for its exemplary service in both combat and construction missions.
Historical Facts
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World War II Origins: The 91st Engineer Battalion was first constituted on October 1, 1933, as the 50th Engineer Battalion (Separate), but was redesignated as the 91st Engineer Battalion (Separate) in January 1941 and activated at Camp Shelby, Mississippi.
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Combat in North Africa: During World War II, the 91st Engineer Battalion participated in the North African Campaign, landing in Morocco during Operation Torch in November 1942, where they supported the rapid advance of Allied forces.
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Italian Campaign: The battalion played a significant role in the Italian Campaign, constructing vital roads, bridges, and supply routes through treacherous terrain, often under enemy fire.
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First to Cross Po River: The 91st Engineers were among the first U.S. units to build and cross a bridge over the Po River in northern Italy in April 1945, enabling the final Allied advance.
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Decorated Service: The battalion earned several campaign streamers and was awarded the Meritorious Unit Commendation for its exemplary performance in World War II.
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Vietnam War Service: The 91st Engineer Battalion was reactivated for the Vietnam War, providing vital construction, mobility, and combat engineering support throughout the conflict.
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Post-Vietnam Inactivation: After Vietnam, the battalion was deactivated in 1972, reflecting the post-war drawdown of U.S. forces.
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Reactivation and Modern Missions: The 91st was reactivated at Fort Hood, Texas, in 1992, serving as a combat engineer battalion supporting rapid deployment and contingency operations.
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Operations in Iraq and Afghanistan: The battalion deployed in support of Operations Iraqi Freedom and Enduring Freedom, conducting route clearance, construction, and base security missions.
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Motto and Symbolism: The unit motto, "Acts Not Words," reflects their tradition of decisive action, and their distinctive unit insignia features a red shield with a castle, symbolizing their engineer heritage and valor.
