The regiment served out its term of service within the continental United States, and did not see action during the war.

[1] On July 11, 1898, the regiment mustered into federal service at Camp Douglas, Wisconsin, with a strength of 46 officers and 1,265 enlisted men.

[2] They remained in Wisconsin through the end of hostilities in August, but in September they were sent to Camp Shipp in Anniston, Alabama, for garrison duty.

[3] At the time of mustering out, the unit consisted of 46 officers and 1,090 enlisted men.

[2] The 4th Wisconsin Infantry suffered 16 enlisted men and 1 officer who died of disease.