Assault Craft Unit 1
military unit

Assault Craft Unit ONE, (ACU-1) is a Pacific Ocean Maritime Prepositioning Force in the United States Navy operated under Naval Beach Group ONE out of Naval Amphibious Base (NAB) Coronado with a Forward Detachment in Sasebo, Japan. ACU-1's force consists of Landing Craft Utility (LCU) boats, Landing Craft Mechanized (LCM), Mark 8 boats, and Maritime Prepositioning Force Utility Boats (MPFUBs). The sister unit of ACU-1 is Assault Craft Unit 2 in Naval Amphibious Base Little Creek, Virginia.
History
Assault Craft Unit 1 traces its roots to World War II as hundreds of LCUs were decommissioned, leaving 30 LCUs in the command of "Centralized Flotilla Command" in NAB Coronado known as LCU Squadron ONE. In July, 1947, a neighboring command, Boat Unit ONE, was created to command Landing Craft Mechanized (LCM) LCM-3s and Landing Craft, Vehicle, Personnel (LCVP)s. In 1950, the two commands participated in the Battle of Inchon and in every amphibious operation of the Korean War afterward.
In 1963, the LCU Squadron ONE and Boat Unit ONE were merged to make Assault Craft Squadron 1 (ACS-1). In 1968, the Chief of Naval Operations (CNO) directed to have ACS-1 and its Assault Craft Divisions ELEVEN, TWELVE and THIRTEEN be disestablished and reformed as Assault Craft Unit ONE (ACU 1).
In 1990, in response to the Gulf War, ACU-1 was a first responder, acting to transport and unload cargo from Maritime Prepositioning Ships using LCM-8s. Since the September 11 attacks, ACU-1 has operated outside of a strictly military role, providing humanitarian services and disaster relief. Recently, ACU-1 has operated with other Amphibious Battalions providing Military logistics for the Key Resolve/Foal Eagle Military exercise in South Korea.
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This entry incorporates text from “Assault Craft Unit 1” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.