General Rosecrans, early in September, commenced to move the Army of the Cumberland across the Tennessee River into Georgia, his objective being Chattanooga. Burnside at about the same time began a movement towards Knoxville, and on the way recaptured Cumberland Gap. The Confederate authorities, fearing Bragg was in danger, decided to send large reinforcements to his army, and, on September 9, 1863, Longstreet, with two divisions of his corps and a complement of artillery, was dispatched by rail from Lee to reinforce Bragg. The sanguinary battle of Chickamauga was fought on the 19th and 20th of September. It resulted in Rosecrans and his army gaining possession of Chattanooga, and Bragg and his army being left in possession of the battlefield. Rosecrans held Chattanooga in little less than a state of siege; his communications were in danger of being effectively cut off, and to aid his imperilled forces the Eleventh and Twelfth Corps of the Army of the Potomac were, on September 24th, ordered west, in command of General Joseph Hooker. The loss of these corps reduced the relative strength of Meade's army to Lee's materially below what it was before Longstreet's two divisions were detached from the latter's army. Elliott was relieved of the command of the Third Division, Third Corps of the Army of the Potomac, October 3, 1863, and ordered to report to Rosecrans. General Joseph B. Carr (Troy, N. Y.) succeeded him. Carr was a charming man socially, of fine appearance, amiable and lovable, but not strong as a soldier. He was understood to be a favorite of the President, who appointed him Brigadier-General September 7, 1862; the Senate, however, failing to confirm him, the President reappointed him in March, 1863, with rank from date of first appointment, thus giving him high rank in spite of the Senate. He was finally confirmed, on a third appointment in 1864, through some compromise, after a sharp controversy between the President and the Senate, but with junior rank, and then ordered to Butler's army.( 1) For a time active operations were not contemplated by Meade. But Lee, about the 9th of October, crossed the Rapidan and commenced a movement around Meade's right, threatening his rear. This compelled Meade to retire across the Rappahannock, and by the 14th to Centreville and Union Mills, near the first Bull Run battle- field. On the 13th, while my brigade, with a New York battery temporarily attached to it, was holding "Three Mile Station," near Warrenton, and skirmishing with the enemy, ballot-boxes were opened, and a _regular_ election was held for the Ohio troops, both the boxes and ballots being carried to the voters along the battle-line so they might vote without breaking it.( 2)