18th Wisconsin Infantry Regiment
The 18th Wisconsin Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. Service. The 18th Wisconsin was organized at Milwaukee, Wisconsin, and mustered into Federal service March 15, 1862. The regiment was mustered out on July 18, 1865, at Louisville, Kentucky. Casualties. The 18th Wisconsin suffered 4 officers and 52 enlisted men killed in action or who later died of their wounds, plus another 2 officers and 167 enlisted men who died of disease, for a total of 225 fatalities.