Civil War Wiki
40th Regiment Illinois Volunteer Infantry
Illinois state flag
Active August 10, 1861 to July 24, 1865
Country United States
Allegiance Union
Branch Infantry
Engagements Battle of Shiloh
Siege of Vicksburg
Battle of Missionary Ridge
Battle of Kennesaw Mountain
Siege of Atlanta
March to the Sea

The 40th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.


The 40th Illinois Infantry was organized at Springfield, Illinois and mustered into Federal service on August 10, 1861.

The regiment was mustered out on July 24, 1865.

Total strength and casualties[]

The regiment suffered 6 officers and 119 enlisted men who were killed in action or mortally wounded and 4 officers and 117 enlisted men who died of disease, for a total of 246 fatalities.[1]


  • Colonel Stephen G. Hicks - discharged on October 13, 1862.[2]

See also[]

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

Albert Caslor Mitchell, 40th Illinois Volunteer Infantry Co. G was a hero.


  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