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21st Regiment Wisconsin Volunteer Infantry
File:Flag of Wisconsin.svg
Wisconsin flag
Active September 5, 1862 to July 14, 1865
Country United States
Allegiance Union
Branch Infantry
Engagements Battle of Perryville
Battle of Stone's River
Battle of Chickamauga

The 21st Regiment Wisconsin Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.


The 21st Wisconsin was organized at Oshkosh, Wisconsin and mustered into Federal service September 5, 1862.

The regiment was mustered out on June 17, 1865.


The 21st Wisconsin suffered 5 officers and 117 enlisted men killed in action or who later died of their wounds, plus another 3 officers and 180 enlisted men who died of disease, for a total of 305 fatalities.[1]


  • Colonel Benjamin Sweet

See also[]

  • List of Wisconsin Civil War Units