40th Wisconsin Infantry Regiment


The 40th Infantry Regiment was organized at Camp Randall in Madison, Wisconsin, on June 14, 1864.

Active Duty

They proceeded directly to Memphis, Tennessee, where they were assigned to drill, guard, and patrol duty, and engaged in minor actions and skirmishes. The regiment assisted in the defense of Memphis and the attack there on August 21, 1864.

The 40th's term of service expired in September, and the regiment returned to Madison, Wisconsin, where they were disbanded on September 16, 1864.


The regiment lost Regiment lost 1 Officer and 18  men to disease during their service.

For Further Research

Search our collections for photos and artifacts from Wisconsin in the Civil War. Read about other Wisconsin Civil War regiments. For detailed regimental histories of the U.S. Civil War, consult the Frederick H. Dyer, Compendium of the War of the Rebellion: Regimental Histories.

The histories above, unless otherwise noted, are adopted from Charles E. Estabrook, ed., Records and Sketches of Military Organizations, (Madison, 1914). This page was developed with the help of Bard.