15th Cavalry Division (United States)

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U.S. Cavalry Divisions
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The 15th Cavalry Division was created with the 1st & 2nd Cavalry Brigades in February 1917 at Fort Sam Houston, Texas. It numbered in succession of the 1st–14th Divisions, which were not all active at its creation. Originally trained for deployment to Europe, its units were later converted into field artillery units. The division was deactivated on 12 May 1918. Elements of the division were reconstituted as the 1st Cavalry Division in 1920.



  • Headquarters, 15th Cavalry Division was located at Fort Bliss, Texas
  • 1st Cavalry Brigade at Fort Sam Houston, Texas
  • 2nd Cavalry Brigade at Fort Bliss
  • 3rd Cavalry Brigade at Fort Riley, Kansas, later Douglas, Arizona.


During World War One the National Guard organized four cavalry divisions: the 21st, 22nd, 23rd, and 24th. The Organized Reserves organized six Cavalry Divisions: the 61st, 62nd, 63rd, 64th, 65th, and 66th.

15th Sustainment Brigade derives its numerical designation from its origin as the 15th Cavalry Division Quartermaster Trains.
The brigade support battalions of the 1st Cavalry Division derive their numerical designations & lineage from the 15th Quartermaster Squadron & 15th Medical Squadron.

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