An intelligent observer of the American Civil War in early September of 1863 would have reached certain conclusions about the War thus far:
1. The Union was losing the War in the East. After many spectacular battles and huge casualties, the battle lines in Virginia remained much the same as they had early in the War: the Union controlled the northern third of the Old Dominion state and the South controlled the Southern two-thirds. A stalemate of more than two years duration favored the Confederacy.
2. The War in the trans-Mississippi was a side show that could be ignored.
3. In the West, between the Appalachians and the Mississippi, the Union was clearly winning, with control of the Mississippi wrested from the Confederacy, with New Orleans and large sections of Louisiana controlled by the Union, and with Tennessee largely under Union control.
4. The northern Presidential election in 1864 would probably prove decisive. If Lincoln could make progress in the East and continue to win in the West he would likely be re-elected. If the Confederacy could maintain the stalemate in the East and reverse the Union momentum in the West, or at least slow it to a crawl, Lincoln would be defeated and the Confederacy would win its independence.
General Braxton Bragg, the irascible commander of the Army of Tennessee, clearly understood that the Confederacy could not continue losing in the West, and that is why he rolled the iron dice of war at Chickamauga in a desperate attempt to stop the offensive of Major General William Rosecrans and his Union Army of the Cumberland. Bragg proved fortunate, and his hard luck army gave the Confederacy one of its great victories, and the chance to change the whole course of the War.
Below is the passage on Chickamauga from the memoir of John B. Gordon, who during the war rose from Captain to Major General in the Army of Northern Virginia. Gordon did not fight at Chickamauga, but his wonderfully colorful account of the battle, ground he was familiar with from being reared there in his childhood, written with his usual entertaining purple prose, captures well the facts of the battle, and how this victory was treasured by the South, even as its benefits to the Confederacy were ultimately thrown away due to a lack of pursuit and the desultory, and unsuccessful, siege of Chattanooga.