Yeomanry is a designation used by a number of units or sub-units of the British Territorial Army, descended from volunteer cavalry regiments. Today, Yeomanry units may serve in a variety of different military roles. There were reductions in the size of the TA in 1957 and 1961 and this led to amalgamation of some pairs of yeomanry regiments. There was a major reduction in reserve forces in 1967 with the formation of the Territorial and Army Volunteer Reserve, and all existing yeomanry regiments were reduced to squadron, company or battery sub-units. A number of further reorganizations have taken place since then.