Rosecrans would have moved on the enemy, but learned that the foe had several head of cavalry more than he did, also a team of artillery. At this time John Morgan made a raid into Ohio. He surrounded Cincinnati, but did not take it, as he was not keeping house at the time and hated to pay storage on it. He got to Parkersburg, West Virginia, and was captured there with almost his entire force.
On September 19 and 20 occurred the battle of Chickamauga. Longstreet rushed into a breach in the Union line and swept it with a great big besom of wrath with which he had wisely provided himself on starting out. Rosecrans felt mortified when he came to himself and found that his horse had been so unmanageable that he had carried him ten miles from the carnage.
But the left, under Thomas, held fast its position, and no doubt saved the little band of sixty thousand men which Rosecrans commanded at the time.
His army now found itself shut up in intrenchments, with Bragg on the hills threatening the Union forces with starvation.
On November 24-25 a battle near Chattanooga took place, with Grant at the head of the Federal forces. Hooker came to join him from the Army of the Potomac, and Sherman hurried to his standard from Iuka. Thomas made a dash and captured Orchard Knob, and Hooker, on the following day, charged Lookout Mountain.
This was the most brilliant, perhaps, of Grant's victories. It is known as the "battle of Missionary Ridge." Hooker had exceeded his prerogative and kept on after capturing the crest of Lookout Mountain, while Sherman was giving the foe several varieties of fits, from the north, when Grant discovered that before him the line was being weakened in order to help the Confederate flanks. So with Thomas he crossed through the first line and over the rifle-pits, forgot that he had intended to halt and reform, and concluded to wait and reform after the war was over, when he should have more time, and that night along the entire line of heights the camp-fires of the Union army winked at one another in ghoulish glee.
The army under Bragg was routed, and Bragg resigned his command.
Burnside, who had been relieved of the command of the Army of the Potomac, was sent to East Tennessee, where the brave but frost-bitten troops of Longstreet shut him up at Knoxville and compelled him to board at the railroad eating-house there.
Sherman's worn and weary boys were now ordered at once to the relief of Burnside, and Longstreet, getting word of it, made a furious assault on the former, who repulsed him with loss, and he went away from there as Sherman approached from the west.