In previous years, the then military engineers were responsible for siege warfare and building field fortifications, temporary camps and roads. Although the Royal Engineers can technically trace their origins back William the Conqueror, in reality the origins lie with the Board of Ordnance which was not established until the fifteenth century.
In 1716 at Woolwich, the Board of Ordnance established a Corps of Engineers which at the outset consisted of only commissioned officers. In 1772, a Soldier Artificer Company was established for service, initially in Gibraltar, and this was the first time non-commissioned military engineers were included. In 1787, they became the Royal Corps of Engineers. Also in that year their role was expanded by the establishment of the Corps of Royal Military Artificers consisting of non-commissioned officers and privates which was directed in its work by the Royal Engineers. In 1797 the earlier established Gibraltar company was then incorporated into the Royal Engineers and in 1812 the whole division became the Corps of Royal Sappers and Miners.
The Board of Ordnance was abolished in 1855 and authority over the Royal Engineers and Royal Sappers and Miners transferred to the Army Commander-in-Chief thus integrating them with the rest of the British Army. In 1856 the Royal Engineers and Royal Sappers and Miners became the Corps of Royal Engineers and at that juncture they relocated from Woolwich to Chatham.
As a result of various army reforms further changes occurred in 1861 when Volunteer Engineering companies were created. The Volunteer Force engineers supported the regular Royal Engineers in various roles but principally operating the boats to tend the submarine mine defences that protected our harbours around Britain and throughout the empire.
Just prior to World War One, the Royal Engineers formed its Air Battalion. Then during the First World War a massive transformation of the Royal Engineers took place because new technologies became paramount in warfare on the Western Front in particular, which required engineers to undertake an increasing range of roles. During the war, manpower increased from about 25,000 at the start of the war to 315,000 by 1918.



















