The ensign of the Royal Fleet Auxiliary on a ship at Pltmouth
The Royal Fleet Auxiliary (RFA) is a naval auxiliary fleet owned by the United Kingdom’s Ministry of Defence and is one of the five fighting arms of the Royal Navy.[2] Its purpose is to support the Royal Navy[3] to maintain operations around the world. Its primary role is to supply the Royal Navy with fuel, ammunition and supplies, normally by replenishment at sea (RAS). It also transports Army and Royal Marine personnel, as well as supporting training exercises, and engaging in anti-piracy, anti-drug smuggling, and humanitarian operations.