4th Illinois Cavalry Regiment

The 4th Regiment Illinois Volunteer Cavalry was a cavalry regiment that served in the Union Army during the American Civil War.

Service
The 4th Illinois Cavalry was mustered into service at Ottawa, Illinois, on September 26, 1861.

It was consolidated with 12th Regiment Illinois Volunteer 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.

Commanders

 * Colonel Theophilus Lyle Dickey - resigned February 16, 1863
 * Colonel Martin R. M. Wallace - mustered out November 3, 1864