**FLSU 1 (Force Logistics Support Unit 1)** was a key logistics formation within the United States Marine Corps during the Vietnam War. Established in the mid-1960s, FLSU 1 provided essential supply, maintenance, and transportation support to Marine combat units operating in I Corps Tactical Zone, particularly around Da Nang. The unit played a vital role in sustaining Marine operations by ensuring a steady flow of ammunition, food, fuel, and equipment to forward-deployed forces. FLSU 1's efforts were instrumental to the overall effectiveness and endurance of U.S. Marine Corps operations in Vietnam until its deactivation later in the conflict.
