Civil War Wiki
15th Regiment Illinois Volunteer Infantry
Illinois flag
Active April 25, 1861 to September 16, 1865
Country United States
Allegiance Union
Branch Infantry
Engagements Fort Donelson
Battle of Shiloh
Siege of Vicksburg

The 15th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.


The 15th Illinois Infantry was mustered at Freeport, Illinois on April 25, 1861.

The regiment was consolidated with the 14th Regiment Illinois Volunteer Infantry to form the 14th and 15th Illinois Battalion Infantry on July 1, 1864 and was finally mustered out of service on September 16, 1865 at Fort Leavenworth.

Total strength and casualties[]

The regiment suffered 6 officers and 81 enlisted men who were killed in action or who died of their wounds and 5 officers and 135 enlisted men who died of disease, for a total of 227 fatalities.[1]


  • Colonel Thomas J. Turner - resigned November 2, 1862.
  • Colonel George C. Rogers[2]

See also[]

  • List of Illinois Civil War Units
  • Illinois in the American Civil War


  1. The Civil War Archive website after Dyer, Frederick Henry. A Compendium of the War of the Rebellion. 3 vols. New York: Thomas Yoseloff, 1959.
  2. Illinois in the Cvil war website after Illinois Adjutant General's muster rolls