The Indiana Infantry Regiments were military units formed during the American Civil War, primarily composed of volunteers from the state of Indiana. These regiments played a significant role in various battles and campaigns, contributing to the Union's efforts to preserve the nation. Each regiment typically consisted of around 1,000 soldiers and was organized into companies. Throughout the war, Indiana contributed over 200,000 soldiers, with many serving in the infantry. The regiments were known for their bravery and effectiveness in combat, participating in key battles such as Shiloh, Gettysburg, and Chickamauga. Their legacy is remembered as part of Indiana's rich military history.