The XVIII Corps of the Ottoman Empire (Turkish: 18 nci Kolordu or On Sekizinci Kolordu) was one of the corps of the Ottoman Army. It was formed during World War I.
Balkan Wars
Order of Battle, October 29, 1912 On October 29, 1912, the corps was structured as follows:Edward J. Erickson, Defeat in Detail, The Ottoman Army in the Balkans, 1912–1913, Westport, Praeger, 2003, p. 103.
XVIII Provisional Corps (Thrace, under the command of the Second Eastern Army) Yozgat Redif Division, Ankara Redif Division, Aydin Redif Division
World War I
Order of Battle, June 1915 The corps was formed as the Right Wing Group of the Mahmut Kâmil Pasha's Third Army on June 7, 1915 and commanded by Halil Bey. In a rearrangement of operational field commands, Mahmut Kâmil Pasha redesigned this unit as the Provisional Halil Corps.
Right Wing Group (Caucasus, Commander: Kaymakam Halil Bey -> Mirliva Abdülkerim Pasha since July 19, 1915) 1st Expeditionary Force (Commander: Kaymakam Ali İhsan Bey) 5th Expeditionary Force (Commander: Kaymakam Bekir Sami Bey) 36th Division (Commander: Kaymakam Köprülü Kâzım Bey)
Order of Battle, Late Summer 1915 On September 20, 1915, the Provisional Halil Corps was re-designated as the XVIII Corps of the Ottoman Army. In late Summer 1915, the corps was structured as follows:Edward J. Erickson, Order to Die: A History of the Ottoman Army in the First World War, Greenwood Press, 2001, , p. 109.
XVIII Corps (Mesopotamia) 45th Division
Order of Battle, January 1916 In January 1916, the corps was structured as follows:Edward J. Erickson, Order to Die: A History of the Ottoman Army in the First World War, Greenwood Press, 2001, , p. 126.
XVIII Corps (Mesopotamia) 45th Division, 51st Division
Order of Battle, August 1916 In August 1916, the corps was structured as follows:Edward J. Erickson, Order to Die: A History of the Ottoman Army in the First World War, Greenwood Press, 2001, , p. 134.
XVIII Corps (Mesopotamia) 35th Division, 45th Division, 51st Division, 52nd Division
Order of Battle, December 1916 In December 1916, the corps was structured as follows:Edward J. Erickson, Order to Die: A History of the Ottoman Army in the First World War, Greenwood Press, 2001, , p. 154.
XVIII Corps (Mesopotamia) 45th Division, 51st Division, 52nd Division
Order of Battle, August 1917, January 1918 In August 1917, January 1918, the corps was structured as follows:Edward J. Erickson, Order to Die: A History of the Ottoman Army in the First World War, Greenwood Press, 2001, , p. 170, 181.
XVIII Corps (Mesopotamia) 14th Division, 51st Division, 52nd Division
Order of Battle, September 1918 In November 1918, the corps was structured as follows:Edward J. Erickson, Order to Die: A History of the Ottoman Army in the First World War, Greenwood Press, 2001, , p. 197.
XVIII Corps (Mesopotamia) 14th Division, 46th Division
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