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XXIII Reserve Corps
XXIII. Reserve-Korps
Stab eines Generalkommandos.svg
Flag of the Staff of a Generalkommando (1871–1918)
Active October 1914 - 12 August 1918
Country  German Empire
Type Corps
Size Approximately 32,000 (on formation)

World War I

Western Front
First Battle of Ypres

The XXIII Reserve Corps (German language: XXIII. Reserve-Korps / XXIII RK) was a corps level command of the German Army in World War I.


XXIII Reserve Corps was formed in October 1914.[1] It was part of the first wave of new Corps formed at the outset of World War I consisting of XXII - XXVII Reserve Corps of 43rd - 54th Reserve Divisions (plus 6th Bavarian Reserve Division). The personnel was predominantly made up of kriegsfreiwillige (wartime volunteers) who did not wait to be called up.[2] It was dissolved on 12 August 1918.[3]

Structure on formation

On formation in October 1914, XXIII Reserve Corps consisted of two divisions.[4] but was weaker than an Active Corps

  • Reserve Infantry Regiments consisted of three battalions but only had a machine gun platoon (of 2 machine guns) rather than a machine gun company (of 6 machine guns)[5]
  • Reserve Jäger Battalions did not have a machine gun company on formation, though some were provided with a machine gun platoon[6]
  • Reserve Cavalry Detachments were much smaller than the Reserve Cavalry Regiments formed on mobilisation[7]
  • Reserve Field Artillery Regiments consisted of three abteilungen (2 gun and 1 howitzer) of three batteries each, but each battery had just 4 guns (rather than 6 of the Active and the Reserve Regiments formed on mobilisation)[8]

In summary, XXIII Reserve Corps mobilised with 26 infantry battalions, 8 machine gun platoons (16 machine guns), 2 cavalry detachments, 18 field artillery batteries (72 guns) and 2 pioneer companies.

Corps Division Brigade Units
XXIII Reserve Corps 45th Reserve Division[9] 89th Reserve Infantry Brigade 209th Reserve Infantry Regiment
210th Reserve Infantry Regiment
90th Reserve Infantry Brigade 211th Reserve Infantry Regiment
212th Reserve Infantry Regiment
17th Reserve Jäger Battalion[10]
45th Reserve Field Artillery Regiment
45th Reserve Cavalry Detachment
45th Reserve Pioneer Company
46th Reserve Division[11] 91st Reserve Infantry Brigade 213th Reserve Infantry Regiment
214th Reserve Infantry Regiment
92nd Reserve Infantry Brigade 215th Reserve Infantry Regiment
216th Reserve Infantry Regiment
18th Reserve Jäger Battalion[12]
46th Reserve Field Artillery Regiment
46th Reserve Cavalry Detachment
46th Reserve Pioneer Company

Combat chronicle


XXIII Reserve Corps had the following commanders during its existence:[13][14]

From Rank Name
25 August 1914 General der Kavallerie Georg von Kleist
19 December 1914 General der Infanterie Hugo von Kathen
31 July 1918 Generalleutnant Arthur von Gabain


  1. Cron 2002, p. 87
  2. Cron 2002, p. 97
  3. Cron 2002, pp. 88–89
  4. AEF GHQ 1920, pp. 465,470
  5. Busche 1998, pp. 102–104
  6. Cron 2002, p. 116 Active Jäger Battlions had a machine gun company with the exceptions of the 1st and 2nd Bavarian Jäger Battalions
  7. Cron 2002, p. 128 Reserve Cavalry Regiments consisted of three squadrons
  8. Cron 2002, p. 136
  9. AEF GHQ 1920, p. 464
  10. Busche 1998, p. 132 Without a machine gun platoon
  11. AEF GHQ 1920, p. 469
  12. Busche 1998, p. 132 Without a machine gun platoon
  13. "German War History". Retrieved 22 December 2012. 
  14. "Armee-Reserve-Korps". The Prussian Machine. Retrieved 22 December 2012. 


  • Cron, Hermann (2002). Imperial German Army 1914-18: Organisation, Structure, Orders-of-Battle [first published: 1937]. Helion & Co. ISBN 1-874622-70-1. 
  • Ellis, John; Cox, Michael (1993). The World War I Databook. Aurum Press Ltd. ISBN 1-85410-766-6. 
  • Busche, Hartwig (1998) (in German). Formationsgeschichte der Deutschen Infanterie im Ersten Weltkrieg (1914 bis 1918). Institut für Preußische Historiographie. 
  • Histories of Two Hundred and Fifty-One Divisions of the German Army which Participated in the War (1914-1918), compiled from records of Intelligence section of the General Staff, American Expeditionary Forces, at General Headquarters, Chaumont, France 1919. The London Stamp Exchange Ltd (1989). 1920. ISBN 0-948130-87-3. 
  • The German Forces in the Field; 7th Revision, 11th November 1918; Compiled by the General Staff, War Office. Imperial War Museum, London and The Battery Press, Inc (1995). 1918. ISBN 1-870423-95-X. 

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