Following the 1855 absorption of the "Ordnance Military Corps" (including the Royal Artillery, Royal Engineers, and Royal Sappers and Miners), along with the originally civilian Commissariat Department, ordnance stores, transport, barracks and other departments from the abolished Board of Ordnance into the British Army (also referred to historically as the "Regular Army" and the "Regular Force"), there still remained a number of British military (not to be confused with "naval") forces that were not part of the British Army; specifically the part-time "Reserve Forces" (not to be confused with the British Army's Regular Reserve, which was created in the 19th century). The oldest of these was the Militia Force (also referred to as the "Constitutional Force"), which (in the Kingdom of England, prior to 1707) was originally the main military defensive force (there otherwise were originally only Royal bodyguards, including the Yeomen Warders and the Yeomen of the Guard, with armies raised only temporarily for expeditions overseas), made up of civilians embodied for annual training or emergencies, which had used various schemes of compulsory service during different periods of its long existence. From the 1850s it recruited volunteers who engaged for terms of service. The Militia was originally an all-infantry force, though Militia coastal artillery, field artillery, and engineers units were introduced from the 1850s, organised at the city or county level, and members were not required to serve outside of their recruitment area, although the area within which militia units in Britain could be posted was increased to anywhere in the Britain during the Eighteenth Century. The Yeomanry was a mounted force that could also be mobilised in times of war or emergency.