Battle of Chickamauga - Aftermath

Aftermath

While Rosecrans went to Chattanooga, Thomas and two thirds of the Union army were making a desperate yet magnificent stand that has become a proud part of the military epic of America. Thomas, Rosecrans' firm friend and loyal lieutenant, would thereafter justly be known as the Rock of Chickamauga.

The Edge of Glory, Rosecrans biographer William M. Lamers

Thomas withdrew the remainder of his units to positions around Rossville Gap after darkness fell. His personal determination to maintain the Union position until ordered to withdraw, while his commander and peers fled, earned him the nickname Rock of Chickamauga, derived from a portion of a message that Garfield sent to Rosecrans, "Thomas is standing like a rock." Garfield met Thomas in Rossville that night and wired to Rosecrans that "our men not only held their ground, but in many points drove the enemy splendidly. Longstreet's Virginians have got their bellies full." Although he admitted that the troops were tired and hungry, and nearly out of ammunition, he added "I believe we can whip them tomorrow. I believe we can now crown the whole battle with victory." He urged Rosecrans to rejoin the army and lead it, but Rosecrans, physically exhausted and psychologically a beaten man, remained in Chattanooga. President Lincoln attempted to prop up the morale of his general, telegraphing "Be of good cheer. ... We have unabated confidence in you and your soldiers and officers. In the main, you must be the judge as to what is to be done. If I was to suggest, I would say save your army by taking strong positions until Burnside joins you." Privately, Lincoln told John Hay that Rosecrans seemed "confused and stunned like a duck hit on the head."

The Army of Tennessee camped for the night, unaware that the Union army had slipped from their grasp. Bragg was not able to mount the kind of pursuit that would have been necessary to cause Rosecrans significant further damage. Many of his troops had arrived hurriedly at Chickamauga by rail, without wagons to transport them and many of the artillery horses had been injured or killed during the battle. Furthermore, the Tennessee River was now an obstacle to the Confederates and Bragg had no pontoon bridges to effect a crossing. Bragg's army paused at Chickamauga to reorganize and gather equipment lost by the Union army. Although Rosecrans had been able to save most of his trains, large quantities of ammunition and arms had been left behind. Army of Tennessee historian Thomas L. Connelly has criticized Bragg's performance, claiming that for over four hours on the afternoon of September 20, he missed several good opportunities to prevent the Federal escape, such as by a pursuit up the Dry Valley Road to McFarland's Gap, or by moving a division (such as Cheatham's) around Polk to the north to seize the Rossville Gap or McFarland's Gap via the Reed's Bridge Road.

The battle was damaging to both sides in proportions roughly equal to the size of the armies: Union losses were 16,170 (1,657 killed, 9,756 wounded, and 4,757 captured or missing), Confederate 18,454 (2,312 killed, 14,674 wounded, and 1,468 captured or missing). These were the highest losses of any battle in the Western Theater during the war and, after Gettysburg, the second-highest of the war overall. Although the Confederates were technically the victors, driving Rosecrans from the field, Bragg had not achieved his objective of destroying Rosecrans, nor of restoring Confederate control of East Tennessee.

It seems to me that the elan of the Southern soldier was never seen after Chickamauga. ... He fought stoutly to the last, but, after Chickamauga, with the sullenness of despair and without the enthusiasm of hope. That 'barren victory' sealed the fate of the Confederacy.

Confederate Lt. Gen. D.H. Hill

On September 21, Rosecrans's army withdrew to the city of Chattanooga and took advantage of previous Confederate works to erect strong defensive positions. However, the supply lines into Chattanooga were at risk and the Confederates soon occupied the surrounding heights and laid siege upon the Union forces. Unable to break the siege, Rosecrans was relieved of his command of the Army of the Cumberland on October 19, replaced by Thomas. McCook and Crittenden lost their commands on September 28 as the XX Corps and the XXI Corps were consolidated into a new IV Corps commanded by Granger; neither officer would ever command in the field again. On the Confederate side, Bragg began to wage a battle against the subordinates he resented for failing him in the campaign—Hindman for his lack of action in McLemore's Cove, and Polk for his late attack on September 20. On September 29, Bragg suspended both officers from their commands. In early October, an attempted mutiny of Bragg's subordinates resulted in D.H. Hill being relieved from his command. Longstreet was dispatched with his corps to the Knoxville Campaign against Ambrose Burnside, seriously weakening Bragg's army at Chattanooga.

Harold Knudsen contends that Chickamauga was the first major Confederate effort to use the "interior lines of the nation" to transport troops between theaters with the aim of achieving a period of numerical superiority and taking the initiative in the hope if gaining decisive results in the West. He states: "The concentration the Confederates achieved at Chickamauga was an opportunity to work within the strategic parameters of Longstreet's Defensive-Offensive theory." In Knudsen's estimation, it was the Confederates' last realistic chance to take the tactical offense within the context of a strategic defense, and destroy the Union Army of the Cumberland. If a major victory erasing the Union gains of the Tullahoma Campaign and a winning of the strategic initiative could be achieved in late 1863, any threat to Atlanta would be eliminated for the near future. Even more significantly, a major military reversal going into the election year of 1864 could have severely harmed President Lincoln's re-election chances, caused the possible election of Peace Democrat nominee George McClellan as president, and the cessation of the Union war effort to subdue the South.

The Chickamauga Campaign was followed by the Battles for Chattanooga, sometimes called the Chattanooga Campaign, including the reopening of supply lines and the Battles of Lookout Mountain (November 23) and Missionary Ridge, (November 25). Relief forces commanded by Maj. Gen. Ulysses S. Grant broke Bragg's grip on the city, sent the Army of Tennessee into retreat, and opened the gateway to the Deep South for Maj. Gen. William T. Sherman's 1864 Atlanta Campaign.

Much of the central Chickamauga battlefield is preserved by the National Park Service as part of the Chickamauga and Chattanooga National Military Park.