Composed of infantry regiments from Indiana, Wisconsin, and Michigan, the Iron Brigade fought with Army of the Potomac during the Civil War (1861–1865). Received name for valor at battle of South Mountain, Maryland (1862). Sustained combat fatalities among the highest in the Union armies.

Marker is at the intersection of U.S. 20 and Indiana Route 49, on the right when traveling east on U.S. 20.

Courtesy hmdb.org

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