The 12th Independent Battery was mustered into service at St. Louis, Missouri, in February, 1862 as a part of a Missouri light artillery regiment under the authority of Governor Henry but was transferred to Wisconsin state service.

The 12th Independent Battery initially recruited 99 officers and men.

[1] The battery suffered 1 officer and 10 enlisted men killed in action or died of wounds, and 23 enlisted men who died of disease, for a total of 34 fatalities.

First Lieutenant Marcus Amsden, who commanded the battery in this fight, fell mortally wounded; Sergeant Sylvester Bartow, Corporal Alva P. Hamilton, and Private David C. Davey were killed in action, and Privates Charles C. Baker, Joseph W. Chase, and Samuel H. Doolittle also died of their wounds.

This article about a specific military unit of the American Civil War is a stub.