Civil War Wiki
12th Illinois Cavalry
File:Flag of Illinois.svg
Illinois flag
Active February 24, 1862 to May 29, 1866
Country United States
Allegiance Union
Branch Cavalry
Engagements Harpers Ferry
Battle of Gettysburg
Stoneman's 1863 Raid

12th Cav, Co. H and I (McClellan Dragoons)
Peninsula Campaign
Seven Days
Battle of Antietam

The 12th Illinois Cavalry Regiment was a volunteer cavalry regiment which served in the Union Army during the American Civil War.


The 12th Cavalry was organized at Camp Butler in February 1862. It was part of the Army of the Potomac from September 1862 to November 1863; the Department of the Gulf from March 1864 to February 1865; and the Department of Texas from July 1865 to May 1866.

The 4th Illinois Cavalry was consolidated with the 12th Illinois Cavalry on June 14, 1865.

Total strength and casualties[]

The regiment suffered 38 enlisted men who were killed in action or who died of their wounds and 4 officers and 192 enlisted men who died of disease, for a total of 234 fatalities.[1]


  • Colonel Amos Voss
  • Colonel Hasbrouck Davis[2]

See also[]

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

External links[]


  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