The renaissance of the RAuxAF began in 1959 with the formation of three Maritime Headquarters Units and one Maritime Support Unit. The MSU in Belfast was short-lived, but No 1 (County of Hertford) MHU in Northwood, No 2 (City of Edinburgh) MHU in Edinburgh and No 3 (County of Devon) MHU in Mountbatten continued in existence until No 3 was amalgamated into No 1 in 1999. Later that year No 1 was renumbered 600 (City of London) Squadron and No 2 was renumbered 603 (City of Edinburgh) Squadron. These three units formed the entirety of the RAuxAF for twenty years until expansion starting in 1979, with the formation of three Regiment Field Squadrons, continuing with a Movements Squadron in 1982, and, following lessons learned during the Falklands conflict, an Aeromedical Evacuation Squadron in 1983. A later addition, in 1987, was an auxiliary element (The Grampian Troop) formed within a regular RAF Regiment Rapier Air Defence Squadron. Another step forward was taken in 1986, with the raising of four Defence Force Flights with the role of ground defence of key points on air bases. In 1984, the RAuxAF's Diamond Jubilee was marked by the award to the Service of its own badge, which forms the basic motif of the Sovereign's Colour for the Royal Auxiliary Force presented by Her Majesty the Queen in 1989. The words of the badge motto are "COMITAMUR AD ASTRA" – Latin "We go with them to the stars".