Following the British evacuation of Gallipoli, the corps was moved to France in 1916, where it was commanded by Alexander Hamilton-Gordon until he was relieved in 1918.[3]
In April 1918 the corps was allotted those divisions which had suffered severe casualties in the fighting during the Operation Michael the First Battle of the Somme (1918) and the Battle of the Lys,[7]
These divisions were moved south to a quiet sector to reform. This sector was the unlucky target of the next German offensive, the Third Battle of the Aisne in May–June 1918, causing further losses to IX Corps. General Denis Duchêne, commander of the French Sixth Army, had deployed IX Corps (five divisions) too far forward, on the Chemin des Dames ridge, which had been gained at such cost in the Second Battle of the Aisne the previous year. (The French Commander-in-Chief Philippe Pétain and the Army Group Commander Franchet d’Esperey would have preferred the ridge to be lightly held and the main defence to be a battle zone between it and the River Aisne).[8]
In September 1918 the following divisions joined the corps:
The 15th (Scottish) Infantry Division was transferred to the corps, commanded by Lieutenant-General Edwin Morris, on 21 November 1941. On 30 November, both of the county divisions were disbanded, and on 1 December 1941, the corps was renamed IX Corps District. The 15th Division left the IX Corps District on 28 September 1942, to transfer to Northumbrian District, suggesting the corps temporarily ceased to be operational on this date.
For the final offensive in North Africa several veteran formations from the Eighth Army (General Sir Bernard Montgomery) arrived to reinforce the IX Corps, which was to play a leading role in the final offensive. The British 7th Armoured Division, from the Eighth Army, joined IX Corps on 30 April. The 4th Indian Infantry Division, also from the Eighth Army, joined on 30 April, followed by the 201st Guards Brigade, with the 4th Infantry Division joining on 3 May. This gave IX Corps, now commanded by Lieutenant-General Brian Horrocks (replacing Crocker who had been injured by a PIAT in a training incident), two armoured divisions and two infantry divisions. The final assault commenced on 5 May with the two infantry divisions forcing the Medjez-el-Bab gap, through which the two armoured divisions passed through to bring about the eventual surrender of the Axis forces on 13 May 1943.
With the surrender of almost 250,000 Axis soldiers in North Africa, the 7th Armoured Division transferred to V Corps on 18 May 1943, the 4th Infantry Division following it four days later, and the 6th Armoured Division (with the attached 201st Guards Brigade) on 26 May. IX Corps, with no commander after Horrocks returned to X Corps and as Crocker was still injured, was disbanded on 31 May 1943.[10]
Maj A.F. Becke, History of the Great War: Order of Battle of Divisions, Part 4: The Army Council, GHQs, Armies, and Corps 1914–1918, London: HM Stationery Office, 1944/Uckfield: Naval & Military Press, 2007, ISBN1-847347-43-6.
Cole, Howard (1973). Formation Badges of World War 2. Britain, Commonwealth and Empire. London: Arms and Armour Press.
Cliff Lord & Graham Watson, Royal Corps of Signals: Unit Histories of the Corps (1920–2001) and its Antecedents, Solihull: Helion, 2003, ISBN1-874622-92-2.
Harris, J. P. Douglas Haig and the First World War. Cambridge, Cambridge University Press, 2008. ISBN978-0-521-89802-7
JPS Cigarette card series, Army, Corps and Divisional Signs 1914–1918, John Player and sons, 1920s.
Wyrall, E. (2002) [1939]. The History of the 50th Division, 1914–1919 (Naval & Military Press ed.). London: P. Lund, Humphries. ISBN1-84342-206-9.
