About this Unit
Naval Mobile Construction Battalion 40 (NMCB-40), known as the “Fighting Forty,” was a distinguished unit of the United States Navy Seabees. Commissioned in 1942 during World War II, NMCB-40 played pivotal roles in constructing bases, airfields, and infrastructure across the Pacific Theater. The battalion earned accolades for its service in Vietnam, supporting combat operations with vital construction and engineering projects. Over its history, NMCB-40 deployed globally, exemplifying the Seabee motto, “We Build, We Fight,” until its decommissioning in 2012.
Historical Facts
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Founding: Naval Mobile Construction Battalion 40 (NMCB-40), known as the "Fighting Forty," was originally commissioned in March 1942 during World War II as part of the Navy’s Construction Battalions (“Seabees”).
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World War II Service: NMCB-40 played a critical role in the Pacific Theater, constructing airfields, roads, bridges, and other vital infrastructure under combat conditions.
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Korean War Contributions: The battalion was reactivated for service during the Korean War, providing essential construction and engineering support to U.S. and United Nations forces.
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Vietnam War Deployments: NMCB-40 completed numerous deployments to Vietnam, building bases, airfields, and hospitals, often working under enemy fire.
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Nickname and Motto: The battalion’s nickname, "Fighting Forty," reflects its reputation for resilience and excellence in challenging conditions. Its motto is "Can Do!"
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Humanitarian Missions: Beyond combat, NMCB-40 has participated in disaster relief and humanitarian missions around the world, including earthquake recovery in Latin America and typhoon assistance in Asia.
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Cold War Operations: During the Cold War, NMCB-40 supported U.S. military infrastructure projects in Europe and the Pacific, strengthening alliances and strategic positions.
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Gulf War and Post-9/11 Deployments: The battalion was deployed to the Middle East during Operations Desert Shield and Desert Storm, and later supported operations in Iraq and Afghanistan after 9/11.
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Decorations and Awards: NMCB-40 has earned numerous unit commendations, campaign medals, and citations for its exemplary service and achievements over its decades of operation.
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Decommissioning: After a distinguished history spanning 70 years, NMCB-40 was officially decommissioned in September 2012 as part of Navy force restructuring, but its legacy endures in Seabee history.
