The General Service Medal (1962 GSM, also sometimes referred to as the Campaign Service Medal), was introduced in 1962 to combine the General Service Medal (1918), as awarded to the Army and RAF, and the Naval General Service Medal (1915). The 1962 GSM was awarded until 2007, when it was replaced by the Operational Service Medal. The Royal Air Force Long Service and Good Conduct Medal was instituted by King George V in 1919, the year following the establishment of the world's first independent Air Force. The medal could be awarded to Regular Force non-commissioned officers and airmen of the Royal Air Force. The award criteria was later relaxed to also allow the award of the medal to officers who had served a minimum period in the ranks before being commissioned