MCB-40

MCB-40, known as Mobile Construction Battalion Forty or the "Fighting Forty," was a United States Navy Seabee unit established in 1952. The battalion played a crucial role during the Vietnam War, constructing airfields, roads, and support facilities for U.S. and allied forces throughout Southeast Asia. Over the decades, MCB-40 also supported numerous peacetime construction and disaster relief missions in the Pacific and elsewhere, showcasing Seabee versatility. The unit was decommissioned in 1994 as part of post–Cold War military restructuring, leaving a legacy of engineering excellence and service.