ASSAULT CRAFT UNIT 1

• Origins in World War II: Assault Craft Unit 1 (ACU-1) traces its lineage back to the use of landing craft during World War II, when the U.S. Navy began developing specialized units for amphibious operations. • Established in 1959: ACU-1 was officially established in July 1959 at Naval Amphibious Base Coronado, California, making it one of the oldest amphibious craft units in the U.S. Navy. • Mission Focus: The unit specializes in the operation of Landing Craft Utility (LCU) and other amphibious landing craft, transporting troops, vehicles, and cargo from ships to shore during amphibious assaults and humanitarian missions. • Vietnam War Service: ACU-1 played a significant role in the Vietnam War, providing critical support for riverine and coastal operations, including the famous "Brown Water Navy" missions. • Support in Operation Desert Storm: During the Gulf War in 1991, ACU-1 was instrumental in moving Marines, equipment, and supplies to support coalition operations in Kuwait and Iraq. • Global Humanitarian Missions: ACU-1 has participated in numerous humanitarian assistance and disaster relief missions, including operations in Southeast Asia, the Pacific, and after major natural disasters. • Homeport at Coronado: The unit is based at Naval Amphibious Base Coronado, a key hub for Navy Special Warfare and amphibious forces on the West Coast. • LCU Versatility: ACU-1 operates the LCU 1700 class, which can carry up to 350 tons of cargo and operate independently for up to 10 days, making them invaluable for logistics and amphibious assault operations. • Joint and Multinational Exercises: The unit regularly participates in exercises like RIMPAC and Cobra Gold, enhancing interoperability with allied navies and Marine Corps units. • Motto and Pride: ACU-1’s motto is "First In, Last Out," reflecting the unit’s vital role in both the initial assault and the final withdrawal phases of amphibious operations.