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XII Corps (United Kingdom)

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XII Corps
XII Corps formation badge WWII.
Active1915−1919
1940−1945
Country United Kingdom
Branch British Army
TypeCorps
SizeAround 115,000 men (Second World War).
EngagementsFirst World War[1]
Second World War
Commanders
Notable
commanders		Sir Henry Fuller Maitland Wilson
Sir Andrew Thorne
Bernard Montgomery, 1st Viscount Montgomery of Alamein
Sir Montagu Stopford
Sir Neil Ritchie

XII Corps was an army corps of the British Army that fought in the First and Second World Wars. In the First World War, it formed part of the British Salonika Force on the Macedonian front. In the Second World War, it formed part of the British Second Army during Operation Overlord and the subsequent North-West Europe Campaign of 1944-45.

First World War

XII Corps was formed in France on 8 September 1915 under the command of Lt-Gen Sir Henry Fuller Maitland Wilson.[1][2] In November 1915, XII Corps was sent from France with 22nd, 26th and 28th Divisions under command to reinforce Allied forces on the Macedonian front. Wilson and his corps headquarters (HQ) arrived at the port of Salonika on 12 November, but the commander of the British Salonika Force (BSF) took XII Corp’s staff to establish his own HQ.[3] On 14 December 1915, the War Office sanctioned the establishment of two corps within the BSF and Wilson reformed XII Corps.[4]

After a period holding the defensive position known as ‘the Birdcage’ around Salonika, XII Corps moved up-country in July 1916, taking over former French positions, but only part was involved in the fighting during the summer and autumn.[5] XII Corps was selected to attack the Bulgarian positions west of Lake Doiran in April 1917.[6] The area to be attacked was ‘a defender’s dream, being a tangled mass of hills cut by numerous ravines’.[7] Wilson planned a three-stage operation to capture the three lines of defences, preceded by a short intense bombardment. The BSF’s commander, Sir George Milne decided that his manpower was too limited, and reduced this to a smaller assault on the first defence line only, preceded by a three-day bombardment to neutralise enemy batteries and destroy trenches and barbed wire. This, of course, lost the element of surprise and the Bulgarians were well aware of what was coming. Only three brigades were engaged, but the casualties were high and little ground was gained. In a second attack two weeks later, the assault troops managed to cross no man’s land, but it was difficult to get information back to HQs, and some companies simply disappeared.[8]

This 1st Battle of Doiran (second battle by Bulgarian reckoning) had been a failure and, with many troops being withdrawn to other theatres, XII Corps did not get another opportunity to launch a major attack until 18 September 1918. On that day, with two brigades of 22nd Division and the Greek Seres Division, XII Corps failed to take ‘Pip Ridge’ and the ‘Grande Couronne’. The following day, the attack was renewed with a brigade from 27th Division supported by the remnants of 22nd Division, the Seres Division, and the French 2nd Regiment of Zouaves. Once more the attack failed with heavy casualties.[9] However, the 2nd Battle of Doiran had served its purpose by drawing Bulgarian attention away from Gen Franchet d’Esperey’s main Franco-Serbian thrust, which broke through the Bulgarian lines further west. On 21 September, the BSF was ordered to pursue the retreating Bulgarians, with XII Corps in the lead. Bulgaria signed an armistice with the Allies on 29 September, but XII Corps continued to advance across Bulgaria towards the Turkish frontier, until the Ottoman Turks also signed the Armistice of Mudros on 31 October.[10]

XII Corps occupied parts of European Turkey and Wilson was appointed GOC Allied Forces Gallipoli and Bosporus. On 11 February 1919, XII Corps ceased to exist, Wilson becoming Commander, Allied Forces Turkey in Europe, British Salonika Army, and British Army of the Black Sea.[11][12]

First World War order of battle

Order of Battle (March 1917)[13]

Corps Troops:

Second World War

Home defence

XII Corps, which was formed in 1940, came under Commander-in-Chief, Home Forces in the early part of the Second World War. It was based at 10 Broadwater Down in Royal Tunbridge Wells in Kent.[14][15] Lieutenant-General Sir Bernard Montgomery was its commander from 27 April 1941 until 13 August 1942, when he was sent to Egypt to take command of the British Eighth Army.[16]

Order of Battle, June - October 1940[17]

North West Europe

XII Corps, now commanded by Lieutenant-General Neil Ritchie, was designated as one of the follow-up corps of the British Second Army, commanded by Lieutenant-General Miles C. Dempsey, and was sent to Normandy, France as part of Operation Overlord, shortly after the Allied invasion of Normandy in June 1944. In July, it took over command of the troops holding the Odon Valley area in July 1944 (previously under command of Lieutenant-General Richard N. O'Connor's VIII Corps). XII Corps then took part in a diversionary action in the area prior to Operation Goodwood (18–20 July 1944), and was then involved in the fighting southwards out of this area in August. XII Corps was the last assignment of the 59th (Staffordshire) Infantry Division prior to the division's disbandment, due to a severe shortage of manpower, in late August.

XII Corps supported the left flank of XXX Corps during Operation Market Garden in September 1944; but, like VIII Corps on the right flank, struggled to match the pace of XXX Corps' rapid advance. This left XXX Corps' flanks exposed to German counter-attacks on its lines of communication. XII Corps later went on to fight in the rest of the campaign, during operations Pheasant, Blackcock and later in the invasion of Germany.

Order of battle, June 1944
General Officer Commanding Lieutenant-General Neil Ritchie
Corps Troops[20]

Attached formations:

Divisions attached at other times:

Order of Battle, 14–26 January 1945 (Operation Blackcock)[34]

General Officers Commanding

Commanders included:[35]

Notes

  1. ^ a b c The British Corps of 1914-1918
  2. ^ Official History: France and Belgium 1915, Vol. II, p. 87.
  3. ^ Official History: Macedonia, Vol. I, p. 58.
  4. ^ Wakefield & Moody, p.45; Official History: Macedonia, Vol. I, p. 95.
  5. ^ Wakefield & Moody, pp. 48–58; Official History: Macedonia, Vol. I, pp. 155, 188.
  6. ^ Official History, Macedonia, Vol I, p. 295.
  7. ^ Wakefield & Moody p. 65.
  8. ^ Wakefield & Moody, pp. 65–98;Official History: Macedonia, Vol I, pp. 306–319.
  9. ^ Wakefield & Moody pp. 196–219; Official History: Macedonia, Vol II, pp. 163–178.
  10. ^ Wakefield & Moody pp. 220–227.
  11. ^ Army List.
  12. ^ Official History: Macedonia, Vol II, pp. 268–70.
  13. ^ Wakefield & Moody, Appendix.
  14. ^ Newbold, p. 202
  15. ^ "Tunbridge Wells". Kent Photo Archive. Retrieved 14 February 2016.
  16. ^ Michael Carver, 'Montgomery', in John Keegan (ed), Churchill's Generals, London: Weidenfeld & Nicolson, 1991.
  17. ^ "XII Corps". Ordersofbattle.com. Retrieved 11 June 2014.
  18. ^ "12 Corps". The Royal Artillery 1939-45. 2014. Retrieved 11 June 2014.
  19. ^ Nigel F Evans (19 September 2010). "Field Artillery Formations and Regiments of the Royal Artillery in World War 2". Nigelef.tripod.com. Retrieved 11 June 2014.
  20. ^ Forty p. 346.
  21. ^ 86 Anti-Tank Regiment RA (TA) Archived 23 November 2008 at the Wayback Machine
  22. ^ 112 (Durham Lt Inf) Light AA Regiment RA (TA) Archived 10 January 2008 at the Wayback Machine
  23. ^ 7 Survey Regiment RA (TA) Archived 7 January 2009 at the Wayback Machine
  24. ^ Morling, p. 211.
  25. ^ Watson & Rinaldi, p. 132.
  26. ^ 3rd Army Group RA Archived 3 March 2016 at the Wayback Machine
  27. ^ 6 Field Regiment RA Archived 16 March 2012 at the Wayback Machine
  28. ^ 13 Medium Regiment RA Archived 10 June 2010 at the Wayback Machine
  29. ^ 59 (4th W Lancs) Medium Regiment RA (TA) Archived 10 June 2010 at the Wayback Machine
  30. ^ 67 Medium Regiment RA (TA) Archived 10 June 2010 at the Wayback Machine
  31. ^ 72 Medium Regiment RA (TA) Archived 3 March 2016 at the Wayback Machine
  32. ^ 59 (Newfoundland) Heavy Regiment RA (TA) Archived 7 January 2009 at the Wayback Machine
  33. ^ Regiments.org
  34. ^ "XII Corps". Ordersofbattle.com. Retrieved 27 November 2014.
  35. ^ Army Commands Archived 5 July 2015 at the Wayback Machine

References

  • Brig-Gen Sir James E. Edmonds, Official History of the Great War, Military Operations: France and Belgium 1915, Volume II, Battle of Aubers Ridge, Festubert, and Loos, London: Macmillan (1928).
  • Capt Cyril Falls, Official History, Military Operations: Macedonia, Volume I: From the Outbreak of War to Spring 1917, London: HMSO (1933).
  • Capt Cyril Falls, Official History, Military Operations: Macedonia, Volume II: From the Spring of 1917 to the End of the War, London: HMSO (1935).
  • George Forty, British Army Handbook 1939-1945, Stroud: Sutton (1998) (ISBN 0-7509-1403-3).
  • Peter Harclerode, Arnhem: A Tragedy of Errors, Caxton Editions (1994).
  • Col L.F. Morling, Sussex Sappers: A History of the Sussex Volunteer and Territorial Army Royal Engineer Units from 1890 to 1967, Seaford: 208th Field Co, RE/Christians–W.J. Offord, 1972.
  • Newbold, David John. "British planning and preparations to resist invasion on land, September 1939 - September 1940". King's College, University of London.
  • Alan Wakefield & Simon Moody, Under the Devil's Eye: Britain's Forgotten Army at Salonika 1915-1918', Stroud; Sutton Publishing (2004) (ISBN 0-7509-3537-5).
  • Graham E. Watson & Richard A. Rinaldi, The Corps of Royal Engineers: Organization and Units 1889–2018, Tiger Lily Books, 2018, ISBN 978-171790180-4.
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