Civil War Wiki
31st Regiment Illinois Volunteer Infantry
Illinois state flag
Active September 18, 1861 to July 24, 1865
Country United States
Allegiance Union
Branch Infantry
Engagements Battle of Belmont
Battle of Champion Hill
Battle of Big Black River
Siege of Vicksburg
Battle of Kennesaw Mountain
Battle of Atlanta
Battle of Jonesboro
March to the Sea

The 31st Regiment Illinois Volunteer Infantry, nicknamed the "Dirty-First," was an infantry regiment that served in the Union Army during the American Civil War.


The 31st Illinois Infantry was organized at Jacksonville, Illinois and mustered into Federal service at Cairo, Illinois on September 18, 1861. Among the early officers was Major Andrew J. Kuykendall, later a U.S. Representative and Illinois State Senator.

The regiment was mustered out on July 19, 1865 and discharged at Springfield, Illinois on July 31, 1865.

Total strength and casualties[]

The regiment suffered 9 officers and 166 enlisted men who were killed in action or who died of their wounds and 1 officer and 293 enlisted men who died of disease, for a total of 471 fatalities.[1]


  • Colonel John A. Logan
  • Colonel Lindorf Osborn
  • Colonel Edwin S. McCook - 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 Civil War website after Illinois Adjutant General's muster rolls