About this time, we were taunted by the Confederate soldiers and citizens with the assertion that Lee had defeated McClellan at Richmond; that he would soon be in Washington; and that our turn would come next.  The extreme caution of General Halleck also indicated that something had gone wrong, and, on the 16th of July, at Moscow, I received a dispatch from him, announcing that he had been summoned to Washington, which he seemed to regret, and which at that moment I most deeply deplored.  He announced that his command would devolve on General Grant, who had been summoned around from Memphis to Corinth by way of Columbus, Kentucky, and that I was to go into Memphis to take command of the District of West Tennessee, vacated by General Grant.  By this time, also, I was made aware that the great, army that had assembled at Corinth at the end of May had been scattered and dissipated, and that terrible disasters had befallen our other armies in Virginia and the East.

I soon received orders to move to Memphis, taking Hurlbut’s division along.  We reached Memphis on the 21st, and on the 22d I posted my three brigades mostly in and near Fort Dickering, and Hurlbut’s division next below on the river-bank by reason of the scarcity of water, except in the Mississippi River itself.  The weather was intensely hot.  The same order that took us to Memphis required me to send the division of General Lew Wallace (then commanded by Brigadier-General A. P. Hovey) to Helena, Arkansas, to report to General Curtis, which was easily accomplished by steamboat.  I made my own camp in a vacant lot, near Mr. Moon’s house, and gave my chief attention to the construction of Fort Pickering, then in charge of Major Prime, United States Engineers; to perfecting the drill and discipline of the two divisions under my command; and to the administration of civil affairs.

At the time when General Halleck was summoned from Corinth to Washington, to succeed McClellan as commander-in-chief, I surely expected of him immediate and important results.  The Army of the Ohio was at the time marching toward Chattanooga, and was strung from Eastport by Huntsville to Bridgeport, under the command of General Buell.  In like manner, the Army of the Tennessee was strung along the same general line, from Memphis to Tuscumbia, and was commanded by General Grant, with no common commander for both these forces:  so that the great army which General Halleck had so well assembled at Corinth, was put on the defensive, with a frontage of three hundred miles.  Soon thereafter the rebels displayed peculiar energy and military skill.  General Bragg had reorganized the army of Beauregard at Tupelo, carried it rapidly and skillfully toward Chattanooga, whence he boldly assumed the offensive, moving straight for Nashville and Louisville, and compelling General Buell to fall back to the Ohio River at Louisville.