The Volunteer Reserves Service Medal (VRSM) is a medal awarded to all members of the reserves of all of the branches of the British Armed Forces - the Royal Naval Reserve, the Royal Marines Reserve, the Territorial Army and the Royal Auxiliary Air Force. It replaced the separate decorations and medals awarded respectively to officers and other ranks in each of the services - the Royal Navy's Reserve Decoration and Reserve Long Service and Good Conduct Medal, the British Army's Territorial Decoration and Efficiency Medal (Territorial), and the Royal Air Force's Air Efficiency Award - from 1 April 1999.