1st TSB

**1st Transportation Support Battalion (1st TSB)** is a logistics unit of the United States Marine Corps based at Camp Pendleton, California. Originally activated as 1st Service Battalion in 1941, the unit has provided vital transportation and supply support in major conflicts, including World War II, the Korean War, the Vietnam War, and Operations Iraqi Freedom and Enduring Freedom. Over the decades, 1st TSB has undergone several redesignations and reorganizations, adapting to the evolving logistical needs of the Marine Air-Ground Task Force. Today, it remains a key element of 1st Marine Logistics Group, delivering tactical motor transport, landing support, and related logistical capabilities to Marine forces.