The
Militia of the United Kingdom was revived by the
Militia Act 1852, enacted during a period of international tension. As before, units were raised and administered on a county basis, and filled by voluntary enlistment (although conscription by means of the militia ballot might be used if the counties failed to meet their quotas). Training was for 56 days on enlistment, then for 21–28 days per year, during which the men received full army pay. Under the Act, militia units could be embodied by Royal Proclamation for full-time service in three circumstances: • 1. 'Whenever a state of war exists between Her Majesty and any foreign power'. • 2. 'In all cases of invasion or upon imminent danger thereof'. • 3. 'In all cases of rebellion or insurrection'. One of the new regiments created was the
Royal South, or 4th Middlesex Militia, formed on 3 May 1853 at
Hounslow. The
Lord Lieutenant of Middlesex transferred
Lieutenant-Colonel Edward Bagot (a half-pay Regular Army officer, formerly of the
60th Rifles), from command of the
Royal Westminster Militia to command the new regiment. The 5th Middlesex Militia (the
Royal Elthorne Light Infantry) was formed the same month, giving Middlesex a total of five regiments: • 1st or
Royal East Middlesex Militia • 2nd Middlesex, or
Edmonton Royal Rifle Regiment • 3rd Middlesex, or Royal Westminster Light Infantry • 4th or Royal South Middlesex Militia • 5th Middlesex, or Royal Elthorne Light Infantry
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 first of the Middlesex regiments to be called out was the Royal South Middlesex (RSM), embodied in July 1854. until moving to
Gosport by the beginning of December. and then shifting to
Portsmouth in March 1855. When Bagot resigned in 1855, his second-in-command (and brother-in-law of Bagot's wife), Major John Scriven (formerly of the
51st Foot), was promoted on 15 September 1855 to succeed him as Lt-Col Commandant of the regiment. The regiment was at
Cahir in
Ireland by October 1855, shortly afterwards moving to
Cork. It remained stationed there until February 1856 when it transferred to
Buttevant. The RSM returned home and was disembodied on 21 July 1856 and it was stationed at
Athlone from January 1858. The RSM was recalled home and disembodied on 4 June 1858. On 3 August 1872, Lt-Col Scriven was appointed Honorary Colonel of the regiment, and was succeeded as Lt-Col Commandant by A.C. FitzJames, formerly a lieutenant in the
93rd Highlanders. 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 South Middlesex Militia was assigned to 1st Brigade of 3rd Division,
III Corps. The brigade, including the
Royal London Militia and
West Kent Militia, would have mustered at
Tunbridge Wells in time of war. Lieutenant-Col Hon Charles Ernest Edgcumbe, formerly of the
Grenadier Guards, was appointed Lt-Col Commandant of the battalion on 28 August 1880. in 1876 when it was expanded to act as the regimental depot of the Royal Fusiliers. ==Royal Fusiliers==