The I Corps of the Ottoman Empire (Turkish: 1 nci Kolordu or Birinci Kolordu) was one of the corps of the Ottoman Army consisting of ethnic Albanians. It was formed in the early 20th century during Ottoman military reforms.

Formation

Order of Battle, 1911 With further reorganization of the Ottoman Army, to include the creation of corps-level headquarters, by 1911 the I Corps was headquartered in Harbiye. Before the First Balkan War in 1911, the corps was structured as such:Edward J. Erickson, Defeat in Detail, The Ottoman Army in the Balkans, 1912–1913, Westport, Praeger, 2003, pp. 371–372.

I Corps, Harbiye, Constantinople (Ferik Zeki Pasha) 1st Infantry Division, Harbiye, Constantinople 1st Infantry Regiment, Harbiye, Constantinople 2nd Infantry Regiment, Bakırköy, Constantinople 3rd Infantry Regiment, İşkodra 1st Rifle Battalion, Taksim, Constantinople 1st Field Artillery Regiment, Taksim, Constantinople 1st Division Band, Harbiye, Constantinople 2nd Infantry Division, Selimiye, Constantinople (Mirliva Prens Aziz Pasha) 4th Infantry Regiment, İşkodra 5th Infantry Regiment, Selimiye, Constantinople 6th Infantry Regiment, Selimiye, Constantinople 2nd Rifle Battalion, Selimiye, Constantinople 2nd Field Artillery Regiment, Selimiye, Constantinople 2nd Division Band, Selimiye, Constantinople 3rd Infantry Division, Pangaltı, Constantinople (Mirliva Osman Pasha) 7th Infantry Regiment, Taşkışla, Constantinople 8th Infantry Regiment, Taşkışla, Constantinople 9th Infantry Regiment, Kağıthane, Constantinople 3rd Rifle Battalion, Tophane, Constantinople 3rd Field Artillery Regiment, Rami Kışlası, Constantinople 3rd Division Band, Taşkışla, Constantinople Units of I Corps 1st Rifle Regiment, Yıldız, Constantinople 1st Cavalry Brigade, Davutpaşa, Constantinople 1st Cavalry Regiment, Yıldız, Constantinople 2nd Cavalry Regiment, Davutpaşa, Constantinople 2nd Cavalry Brigade, Davutpaşa, Constantinople 3rd Cavalry Regiment, Davutpaşa, Constantinople 4th Cavalry Regiment, Selimiye, Constantinople 1st Horse Artillery Battalion, Davutpaşa, Constantinople 1st Mountain Artillery Battalion, Münzevî Kışlası, Constantinople 1st Field Howitzer Battalion, Gümüşsuyu, Constantinople 1st Engineer Battalion, İplikhane, Constantinople 1st Telegraph Battalion, Ertuğrul Kışlası, Constantinople 1st Medical Battalion, Ahırkapı, Constantinople 1st Railroad Battalion, Ahırkapı, Constantinople 2nd Railroad Battalion, Ahırkapı, Constantinople War Academy, Harbiye, Constantinople Cavalry Squadron, Harbiye, Constantinople Infantry Company, Harbiye, Constantinople Provisional Companies x 2, Harbiye, Constantinople Machine-gun Company, Harbiye, Constantinople Bosporus Fortified Area Command, Bosporus, Constantinople 1st Heavy Artillery Regiment, Bosporus, Constantinople 2nd Heavy Artillery Regiment, Bosporus, Constantinople Searchlight Detachment, Bosporus, Constantinople Torpedo Detachment, Bosporus, Constantinople Mine Detachment, Bosporus, Constantinople Wireless Detachment, Bosporus, Constantinople

Balkan Wars

Order of Battle, October 17, 1912 On October 17, 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. 83.

I Corps (Thrace, under the command of the Eastern Army) 2nd Division, 3rd Division 1st Provisional Division

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.

I Corps (Thrace, under the command of the First Eastern Army) 2nd Division, 3rd Division 1st Provisional Division, Uşak Redif Division

Order of Battle, November 17, 1912 On November 17, 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. 128.

I Corps (Thrace, under the command of the Chataldja Army) 2nd Division, 3rd Division South Wing Detachment I Provisional Reserve Corps 29th Division Ergli Redif Division, Kayseri Redif Division

Order of Battle, March 25, 1913 On March 25, 1913, the corps was structured as follows:Edward J. Erickson, Defeat in Detail, The Ottoman Army in the Balkans, 1912–1913, Westport, Praeger, 2003, p. 287.

I Corps (Thrace, under the command of the Chataldja Army) 2nd Division Fatih Redif Division I Provisional Reserve Corps 29th Division, Ergli Redif Division, Kayseri Redif Division

Order of Battle, July 1913 I Corps (Thrace) 2nd Division, 28th Division, Fatih Infantry Division

World War I

Order of Battle, August 1914, November 1914 In August 1914, November 1914, 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. 38, 43.

I Corps (Thrace) 1st Division, 2nd Division, 3rd Division

Order of Battle, Late April 1915 In late April 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. 86.

I Corps (Thrace) 1st Division, 2nd Division

Order of Battle, Late Summer 1915, January 1916 In late Summer 1915, 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. 109, 126.

I Corps (Gallipoli) 2nd Division, 3rd 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.

I Corps (Gallipoli) 14th Division, 16th 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.

I Corps (Thrace) 14th Division, 16th Division

Order of Battle, August 1917, January 1918, June 1918, September 1918 In August 1917, January 1918, June 1918, September 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, 188, 197.

I Corps (Thrace) 42nd Division

After Mudros

Order of Battle, November 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. 202.

I Corps (Thrace) 55th Division

Order of Battle, January 1919 In January 1919, 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. 209.Zekeriya Türkmen, Mütareke Döneminde Ordunun Durumu ve Yeniden Yapılanması (1918-1920), Türk Tarih Kurumu Basımevi, 2001, , p. 326.

I Corps (Thrace, Adrianople; present day Edirne) 49th Division (Kırkkilise; present day Kırklareli) 153rd Infantry Regiment, 154th Infantry Regiment, 155th Infantry Regiment, 185th Infantry Regiment 60th Division (Malkara) 186th Infantry Regiment, 187th Infantry Regiment

Sources