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101st Regiment Illinois Volunteer Infantry
Illinois flag
Active September 2, 1862 to June 7, 1865
Country United States
Allegiance Union
Branch Infantry

The 101st Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.


The 101st Illinois Infantry was organized at Jacksonville, Illinois and mustered into Federal service on September 2, 1862.

The regiment was mustered out on June 7, 1865 and discharged at Springfield, Illinois on June 21, 1865.

Total strength and casualties[]

The regiment suffered 3 officers and 47 enlisted men who were killed in action or who died of their wounds and 1 officer and 118 enlisted men who died of disease, for a total of 169 fatalities.[1]


  • Colonel Charles H. Fox - Resigned May 1, 1864.
  • Lieutenant Colonel John B. Lesage - Mustered out with the regiment.[2]

See also[]

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

Notable regiment members[]


  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