Civil War Wiki
100th Regiment Illinois Volunteer Infantry
Illinois state flag
Active August 30, 1862 to June 15, 1865
Country United States
Allegiance Union
Branch Infantry
Equipment Battle of Perryville
Battle of Stone's River
Battle of Chickamauga
Siege of Chattanooga
Battle of Missionary Ridge
Battle of Kennesaw MountainBattle of Nashville

The 100th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.


The 100th Illinois Infantry was organized at Joliet, Illinois and mustered into Federal service on August 30, 1862.

The regiment was mustered out on June 12, 1865 and discharged at Chicago, Illinois on June 15, 1865.

Total strength and casualties[]

The regiment suffered 7 officers and 73 enlisted men who were killed in action or who died of their wounds and 134 enlisted men who died of disease, for a total of 214 fatalities.[1]


  • Colonel Frederick A. Bartleson - killed in action at the Battle of Kennesaw Mountain on June 23, 1864
  • Lieutenant Colonel Charles M. Hammond - Mustered out with the regiment.[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