III Corps was an army corps of the British Army formed in both the First World War and the Second World War. Prior to the First World War In 1876, a mobilisation scheme for eight army corps was published, with '3rd Corps' headquartered at Croydon and composed of the guards regiments. In 1880 its order of battle was: 1st Division (Croydon) 1st Brigade (London) 1st Bn. Grenadier Guards (Wellington Barracks), 2nd Bn. Coldstream Guards (The Tower), 2nd Bn. Scots Guards (Chelsea) 2nd Brigade (Croydon) 3rd Bn. Grenadier Guards (Chelsea), 1st Bn. Coldstream Guards (Shorncliffe), 1st Bn. Scots Guards (Wellington Barracks) Divisional Troops 1st Bn. 60th Foot (Winchester), Staffordshire Yeomanry (Lichfield), 9th Company Royal Engineers (RE) (Chatham) Artillery C/5th Brigade Royal Artillery(RA) (Ipswich), B/5th Brigade RA (Chatham), B/6th Brigade RA (Woolwich) 2nd Division (Red Hill) 1st Brigade (Red Hill) Kilkenny Militia (Kilkenny), King's County Militia (Parsonstown), Limerick County Militia (Limerick) 2nd Brigade (Red Hill) 1st Royal Surrey Militia (Richmond upon Thames), 2nd Royal Surrey Militia (Guildford), 3rd Royal Surrey Militia (Kingston upon Thames) Divisional Troops Tyrone Militia (Omagh), Warwickshire Yeomanry (Warwick) Artillery L/3rd Brigade RA (Hilsea), L/4th Brigade RA (Hilsea), C/6th Brigade RA (Woolwich) 3rd Division (Tunbridge Wells) 1st Brigade (Tunbridge Wells) West Kent Light Infantry Militia (Maidstone), 4th South Middlesex Militia (Hounslow), Royal London Militia (London) 2nd Brigade (Maidstone) 1st Royal East Middlesex Militia (Hounslow), 2nd Royal West Middlesex Militia (Barnet), 3rd Royal Westminster Middlesex Militia (Turnham Green) Divisional Troops Royal Sussex Light Infantry Militia (Chichester), Leicestershire Yeomanry (Leicester) Artillery B/1st Brigade RA (Shorncliffe), C/1st Brigade RA (Shorncliffe) Cavalry Brigade (Ashford) 1st Life Guards (London), 2nd Life Guards (Windsor), Royal Horse Guards (London), East Kent Yeomanry (Canterbury), K Battery B Brigade RHA (Canterbury) Corps Artillery (Croydon) K Battery A Brigade Royal Horse Artillery (RHA) (Exeter), F Battery B Brigade RHA (Exeter) This scheme had been dropped by 1881. The Stanhope Memorandum of 1891 (drawn up by Edward Stanhope when Secretary of State for War) laid down the policy that after providing for garrisons and India, the army should be able to mobilise three army corps for home defence, two of regular troops and one partly of militia, each of three divisions. The 1901 army estimates introduced by St John Brodrick allowed for six army corps based on the six regional commands (Aldershot, Southern, Irish, Eastern, Northern and Scottish). From 1 October 1901, the Duke of Connaught held the dual commands