The major administrative change of the period was on 2nd February 1856 when Queen Victoria announced that the Corps of Royal Marines should in future be designated as a 'Light Corps'. This resulted in a separate Division at Portsmouth and the title 'Royal Marine Light Infantry. The separation of the Royal Marine Artillery became more pronounced when the companies that up until then had been attached to the Chatham, Plymouth, Portsmouth and Woolwich Divisions, all formed one 3,000 strong Division at Portsmouth in 1859. Their headquarters were to be the brand new barracks being built at Eastney, Southsea. The first detachment marched in during 1864 and the barracks was gradually occupied as more parts were completed, until the RMA fully moved into the barracks in1867. From then on, to amalgamation in 1923, the light infantry were known as the 'Red Marines' and the artillery as the 'Blue Marines', being references to the colour of their respective tunics.