USN Mobile Construction 40

**USN Mobile Construction Battalion 40 (NMCB 40)**, known as the "Fighting Forty," was a distinguished unit of the United States Navy Seabees. Established during World War II in 1942, the battalion played a crucial role in constructing airfields, bases, and vital infrastructure across the Pacific Theater, notably in Guam, Iwo Jima, and Okinawa. Reactivated for later conflicts, NMCB 40 also served with distinction during the Korean and Vietnam Wars, providing essential construction and combat support. The battalion remained active in peacetime operations and humanitarian missions until its decommissioning in 2012, leaving behind a legacy of service and engineering excellence.