thereof'. 3. 'In all cases of rebellion or insurrection'. The 1852 Act introduced Artillery Militia units in addition to the traditional infantry regiments, and the RSLIM provided 206 volunteers to form the new Royal Sussex Militia Artillery on 9 April 1853. It was based at Lewes with the Duke of Richmond as its colonel-in-chief. Crimean War and Indian mutiny War having broken out with Russia in 1854 and an expeditionary force sent to the Crimea, the militia began to be called out for home defence. The RSLIM was embodied from December 1854 to January 1856 but did not serve overseas. A number of militia regiments were also called out to relieve regular troops required for India during the Indian Mutiny, and the RSLIM was embodied from 12 November 1857 to February 1861 Thereafter the regiments were called out for their annual training. The Militia Reserve introduced in 1867 consisted of present and former militiamen who undertook to serve overseas in case of war. Cardwell Reforms Under the 'Localisation of the Forces' scheme introduced by the Cardwell Reforms of 1872, the militia were brigaded with their local Regular and Volunteers battalions. For the RSLIM this was in Sub-District No 43 (County of Sussex) in South Eastern District, grouped with the 35th (Royal Sussex) and 107th Regiments of Foot and several Rifle Volunteer Corps. The scheme assumed that there would also be two militia battalions in each sub-district, and the RSLIM formed a second battalion between 1877 and 1880. The RSLIM's headquarters had moved between Brighton and Chichester at various times in the 19th Century; now it joined the 35th and 107th in a shared depot at Chichester, where the existing barracks were expanded into Roussillon Barracks. The militia now came under the War Office rather than their county lords lieutenant. Militia battalions now had a large cadre of permanent staff (about 30). Around a third of the recruits and many young officers went on to join the Regular Army. Following the Cardwell Reforms a mobilisation scheme began to appear in the Army List from December 1875. This assigned Regular and Militia units to places in an order of battle of corps, divisions and brigades for the 'Active Army', even though these formations were entirely theoretical, with no staff or services assigned. The Royal Sussex Militia were assigned as 'Divisional Troops' to 3rd Division, III Corps. The division would have mustered at