The RMP's origins can be traced back to the 13th century but it was not until 1877 that a regular corps of military police was formed with the creation of the Military Mounted Police, which was followed by the Military Foot Police in 1885. Although technically two independent corps, they effectively functioned as a single organisation. In 1926, they were fully amalgamated to form the Corps of Military Police (CMP). In recognition of their service in the Second World War, they became the Corps of Royal Military Police on 28 November 1946. In 1992, the RMP amalgamated into the Adjutant General's Corps (AGC), where they form part of the AGC's Provost Branch.