The Indiana 86th Regiment was a unit of the Union Army during the American Civil War. Organized in 1862, it consisted of volunteers from Indiana and served primarily in the Western Theater of the war. The regiment participated in several key battles, including the Battle of Vicksburg and the Battle of Chattanooga. The 86th Regiment was known for its bravery and commitment, contributing to significant military campaigns. After the war, the regiment was mustered out in 1865, with many of its members returning to civilian life. Their service is remembered as part of Indiana's rich military history.