I Corps (Ottoman Empire)

I Corps 1 nci Kolordu / Birinci Kolordu
Active	1911–
Country	Ottoman Empire
Type	Corps
Garrison/HQ	Harbiye, Constantinople
Patron	Sultans of the Ottoman Empire
Engagements	Gallipoli Campaign (World War I)

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

With further reorganizations of the Ottoman Army, to include the creation of corps level headquarters, by 1911 the I Corps was headquartered in Harbiye. The Corps before the First Balkan War in 1911 was structured as such:

On October 17, 1912, the corps was structured as follows:

On October 29, 1912, the corps was structured as follows:

On November 17, 1912, the corps was structured as follows:

On March 25, 1913, the corps was structured as follows:

In August 1914, November 1914, the corps was structured as follows:

In Late April 1915, the corps was structured as follows:

In Late Summer 1915, January 1916, the corps was structured as follows:

In August 1916, the corps was structured as follows:

In December 1916, the corps was structured as follows:

In August 1917, January 1918, June 1918, September 1918, the corps was structured as follows:

In November 1918, the corps was structured as follows:

In January 1919, the corps was structured as follows:

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