Which of the serious defeats for the Union came first in the American Civil War: the Battle of Chickamauga or the Battle of Fredericksburg?
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 in southeastern Tennessee and northwestern Georgia — the Chickamauga Campaign. 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.
Mine Creek Battlefield State Historic Site The Mine Creek Battlefield State Historic Site, located 2.5 mi southwest of Pleasanton in eastern Kansas, United States, commemorates the Battle of Mine Creek in the American Civil War. On October 25, 1864, approximately 2,800 Union troops attacked and defeated about 8,000 Confederates along the banks of Mine Creek. It was one of the largest cavalry battles in the Civil War, and the only major battle fought in Kansas. The Union brigades were commanded by Colonels Frederick W. Benteen and John Finis Philips. After this battle, Federal forces pursued and defeated additional Confederates in Missouri as they attempted to return to Arkansas, the Indian Territory (Oklahoma), and Texas.