Mason City, Iowa Battle of Chickamauga

The Battle of Chickamauga, fought on September 18–20, 1863, between Union and Confederate forces in the American Civil War, marked the end of a Union offensive, the Chickamauga Campaign, in southeastern Tennessee and northwestern Georgia.[1][2] It was the first major battle of the war fought in Georgia, the most significant Union defeat in the Western Theater, and involved the second-highest number of casualties after the Battle of Gettysburg.