The Civil War in Indiana was marked by strong support for the Union, with many residents enlisting to fight against the Confederacy. Indiana contributed over 200,000 soldiers, forming regiments such as the Indiana 20th Regiment and the Indiana 86th Regiment. The state also played a significant role in supplying troops and resources. Despite its Union loyalty, Indiana experienced internal conflicts, including Copperhead movements that opposed the war. Tensions arose over issues like conscription and civil liberties, leading to protests and political divisions. Overall, Indiana's involvement in the Civil War reflected both commitment to the Union and the complexities of wartime society.