America's single bloodiest day was at the Battle of Antietam, and Michigan played a prominent role. Discover the state's connections to the Lost Order, one of the Civil War's greatest mysteries. Explore George A. Custer's role as a staff officer in combat. Mourn the extraordinary losses Michiganders suffered, including one regiment losing nearly half its strength at the epicenter of the battle. The Wolverine State's contributions to secure the Union and enable the Emancipation Proclamation are vast and worthy of a monument on the battlefield. Authors Jack Dempsey and Brian James Egen provide research and analysis that shed new insights on the role of Michigan soldiers and civilians during the epic struggle.