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143rd Illinois Volunteer Infantry Regiment
Flag of Illinois
Illinois state flag
Country United States
Branch Infantry
Allegiance Union
Service history
Active June 11, 1864 to September 26, 1864

The 143rd Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War. It was among scores of regiments that were raised in the summer of 1864 as Hundred Days Men, an effort to augment existing manpower for an all-out push to end the war within 100 days.


The 143rd Illinois Infantry was organized at Mattoon, Illinois, and mustered into Federal service on June 11, 1864, for a one-hundred-day enlistment. The 143rd served in garrisons, first in the Memphis, Tennessee, area and later at Helena, Arkansas.

The regiment was mustered out of service on September 26, 1864.

Total strength and casualtiesEdit

The regiment suffered 55 enlisted men who died of disease, for a total of 55 fatalities.[1]


  • Colonel Dudley C. Smith - mustered out with the regiment.[2]

See alsoEdit


  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


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