General Buell had left Corinth about the 10th of June to march upon Chattanooga; Bragg, who had superseded Beauregard in command, sent one division from Tupelo on the 27th of June for the same place. This gave Buell about seventeen days' start. If he had not been required to repair the railroad as he advanced, the march could have been made in eighteen days at the outside, and Chattanooga must have been reached by the National forces before the rebels could have possibly got there. The road between Nashville and Chattanooga could easily have been put in repair by other troops, so that communication with the North would have been opened in a short time after the occupation of the place by the National troops. If Buell had been permitted to move in the first instance, with the whole of the Army of the Ohio and that portion of the Army of the Mississippi afterwards sent to him, he could have thrown four divisions from his own command along the line of road to repair and guard it.

Granger's division was promptly sent on the 4th of September. I was at the station at Corinth when the troops reached that point, and found General P. H. Sheridan with them. I expressed surprise at seeing him and said that I had not expected him to go. He showed decided disappointment at the prospect of being detained. I felt a little nettled at his desire to get away and did not detain him.

Sheridan was a first lieutenant in the regiment in which I had served eleven years, the 4th infantry, and stationed on the Pacific coast when the war broke out. He was promoted to a captaincy in May, 1861, and before the close of the year managed in some way, I do not know how, to get East. He went to Missouri. Halleck had known him as a very successful young officer in managing campaigns against the Indians on the Pacific coast, and appointed him acting-quartermaster in south-west Missouri. There was no difficulty in getting supplies forward while Sheridan served in that capacity; but he got into difficulty with his immediate superiors because of his stringent rules for preventing the use of public transportation for private purposes. He asked to be relieved from further duty in the capacity in which he was engaged and his request was granted. When General Halleck took the field in April, 1862, Sheridan was assigned to duty on his staff. During the advance on Corinth a vacancy occurred in the colonelcy of the 2d Michigan cavalry. Governor Blair, of Michigan, telegraphed General Halleck asking him to suggest the name of a professional soldier for the vacancy, saying he would appoint a good man without reference to his State. Sheridan was named; and was so conspicuously efficient that when Corinth was reached he was assigned to command a cavalry brigade in the Army of the Mississippi. He was in command at Booneville on the 1st of July with two small regiments, when he was attacked by a force full three times as numerous as his own. By very skilful manoeuvres and boldness of attack he completely routed the enemy. For this he was made a brigadier-general and became a conspicuous figure in the army about Corinth. On this account I was sorry to see him leaving me. His departure was probably fortunate, for he rendered distinguished services in his new field.

Granger and Sheridan reached Louisville before Buell got there, and on the night of their arrival Sheridan with his command threw up works around the railroad station for the defence of troops as they came from the front.

CHAPTER XXVIII.

ADVANCE OF VAN DORN AND PRICE—PRICE ENTERS IUKA—BATTLE OF IUKA.

At this time, September 4th, I had two divisions of the Army of the Mississippi stationed at Corinth, Rienzi, Jacinto and Danville. There were at Corinth also Davies' division and two brigades of McArthur's, besides cavalry and artillery. This force constituted my left wing, of which Rosecrans was in command. General Ord commanded the centre, from Bethel to Humboldt on the Mobile and Ohio railroad and from Jackson to Bolivar where the Mississippi Central is crossed by the Hatchie River. General Sherman commanded on the right at Memphis with two of his brigades back at Brownsville, at the crossing of the Hatchie River by the Memphis and Ohio railroad. This made the most convenient arrangement I could devise for concentrating all my spare forces upon any threatened point. All the troops of the command were within telegraphic communication of each other, except those under Sherman. By bringing a portion of his command to Brownsville, from which point there was a railroad and telegraph back to Memphis, communication could be had with that part of my command within a few hours by the use of couriers. In case it became necessary to reinforce Corinth, by this arrangement all the troops at Bolivar, except a small guard, could be sent by rail by the way of Jackson in less than twenty-four hours; while the troops from Brownsville could march up to Bolivar to take their place.

On the 7th of September I learned of the advance of Van Dorn and Price, apparently upon Corinth. One division was brought from Memphis to Bolivar to meet any emergency that might arise from this move of the enemy. I was much concerned because my first duty, after holding the territory acquired within my command, was to prevent further reinforcing of Bragg in Middle Tennessee. Already the Army of Northern Virginia had defeated the army under General Pope and was invading Maryland. In the Centre General Buell was on his way to Louisville and Bragg marching parallel to him with a large Confederate force for the Ohio River.

I had been constantly called upon to reinforce Buell until at this time my entire force numbered less than 50,000 men, of all arms. This included everything from Cairo south within my jurisdiction. If I too should be driven back, the Ohio River would become the line dividing the belligerents west of the Alleghanies, while at the East the line was already farther north than when hostilities commenced at the opening of the war. It is true Nashville was never given up after its first capture, but it would have been isolated and the garrison there would have been obliged to beat a hasty retreat if the troops in West Tennessee had been compelled to fall back. To say at the end of the second year of the war the line dividing the contestants at the East was pushed north of Maryland, a State that had not seceded, and at the West beyond Kentucky, another State which had been always loyal, would have been discouraging indeed. As it was, many loyal people despaired in the fall of 1862 of ever saving the Union. The administration at Washington was much concerned for the safety of the cause it held so dear. But I believe there was never a day when the President did not think that, in some way or other, a cause so just as ours would come out triumphant.