Amphibious Rapid Deployment Brigade

The Amphibious Rapid Deployment Brigade (水陸機動団, Suirikukidōdan) is the only marine unit of the Japan Ground Self-Defense Force (JGSDF) responsible for conducting amphibious warfare, coastal defence, and rapid response operations to security threats in island areas in Japanese territorial waters if invaded. The ARDB is based at Camp Ainoura in Sasebo, Nagasaki Prefecture.