But Halleck was imperative in his orders and Buell had to submit, with the ultimate result of having to scatter his forces widely in order to guard both lines and repair both, on pain of bringing actual starvation upon his army.
The second mistake was in ordering Buell to repair the very badly damaged Memphis and Charleston railroad as he advanced. This, as we have already seen, resulted in so delaying his advance that Bragg reached Chattanooga first and was from that hour master of the situation.
In the meanwhile Forrest and Morgan were ceaselessly active in Buell's rear – towards Louisville – harassing his detachments, threatening and at times destroying his communications, burning bridges, tearing up railroads, gathering recruits from the youth of Kentucky and Tennessee, throwing the people into panic and grave uncertainty of mind, and now and then defeating and capturing important forces. Thus at Tompkinsville, Kentucky, Morgan routed the Federal garrison under Major Jordan, and proceeding, destroyed the railroad at Lebanon Junction, and at Lebanon compelled the surrender of the force there with a large amount of supplies which Buell badly needed. Thence he raided all over central Kentucky, destroying railroads of the utmost importance to Buell and finally escaping with rich booty into the Confederate lines again.
Forrest pushed out from Chattanooga and undertook even larger operations. He assailed Murfreesborough on the thirteenth of July, carried the place by storm, captured the whole garrison, including its commander, General Crittenden, and, turning about, overcame and captured Colonel Lester on the Stone river, with his entire force of nine full companies.
These actions were not battles of any special consequence, of course. They are mentioned here merely as illustrations of the perplexities that beset General Buell in his march upon Chattanooga, and ultimately made a complete failure of the attempt. Such actions as those described were of daily occurrence, and they compelled General Buell not only to weaken his column by detachments sent to strengthen exposed positions, but still further to cripple himself by sending columns of some importance to try conclusions with the very enterprising enemy.
Bragg, at the head of a strong Confederate army, established himself in Chattanooga on the twenty-ninth of July, some weeks before Buell could finish the reconstruction of the Memphis and Charleston railroad and advance to the point the occupation of which was the sole object of his campaign.
Bragg at once called to his aid all the troops that could be spared to him from points of less importance, and very soon he was at the head of a strong force which threatened a serious and dangerous invasion.
But while he was thus concentrating his forces for a vigorous aggressive movement, Bragg adroitly concealed his purposes. He so disposed his divisions as to leave Buell in utter uncertainty as to his intentions. It might be that he intended a reconquest of Nashville. It might be that his purpose was to march into eastern Kentucky. It might be that he intended to move northward, take Buell in flank and rear, destroy his communications, cut him off from assistance or retreat, and perhaps compel his surrender. His dispositions equally threatened each of these possible enterprises, without in the least degree impairing his ability instantly to concentrate his entire force for the execution of any one of them.
And what his force was Buell did not know and could not conjecture with any degree of confidence. East Tennessee was full of Union men eager to give helpful information to the Federal commander, but Bragg, with an adroitness that had not before been brought to bear upon campaigning in the west, managed to conceal the strength of his army even from the citizens of Chattanooga, at the same time moving troops about in such fashion as to suggest half a dozen different and irreconcilable purposes. It thus happened that the more and the more positive information Buell received with regard to his enemy's operations and intentions, the more hopelessly was he bewildered. He dared not concentrate upon any line, lest his adversary should move at once by some other and put him in peril. No one can read General Buell's orders and dispatches written at that time without being strongly impressed with the hopeless confusion and uncertainty of his mind due to a situation that was perplexing in the extreme.
It was obvious that he must draw his widely scattered forces together at some point; but where? He could not concentrate them at any point upon the line or in the region he was supposed to be occupying without weakening all other points at grave risk of having his enemy turn his position and bring him to destruction. There was only one course that he could pursue with even tolerable prudence. That was to abandon his aggressive campaign, fall back, concentrate for defense and give battle at some point of his own selection much farther north.
Bragg's army consisted of five divisions of infantry with artillery and cavalry. Buell had five divisions in front and three others within almost instant call, while he could depend upon being still further reinforced from Louisville, whither a still further part of Grant's army had been sent. But the nature of the country in which Bragg lay, and the uncertainty of his intentions forbade an attack upon him there.
Buell decided at last that his adversary's objective was Nashville, and on the thirtieth of August he gave orders for a retreat toward that place by way of Murfreesboro. At Murfreesboro he made no pause, as by that time Bragg's movement had developed his purpose to go into Kentucky and make a hurried advance upon Louisville, striking that city before Buell could come to its defense. Buell therefore abandoned his march towards Nashville and pushed his column northward by hurried marches, in the hope that he might beat Bragg in the race for the Ohio river, or failing in that, might be in time to fall upon his adversary's rear before he could establish himself in Louisville's defenses. He left a small garrison to hold Nashville but pushed forward in all haste with his main army, in retreat upon Louisville.
His retreat was embarrassed at every step. Bragg had forces ahead of him who destroyed bridges, tore up tracks, captured important supply depots, and in one case, at Mumfordsville, compelled the surrender – September 17 – of a fortified town with its garrison, upon which Buell had somewhat depended for a reinforcement.
At first Buell had left Thomas at Nashville, to defend that city, but his own need of strength became so pressing that he called upon that able officer to join him with the greater part of the troops that had been left at Nashville.
What Bragg's campaign really meant, and what he hoped to accomplish by it may best be shown by his own orders and dispatches. On August eleventh, soon after he had established himself at Chattanooga, he sent instructions to General Van Dorn who was confronting Grant at Corinth in which he said: "It is very desirable to press the enemy closely in West Tennessee. We learn their forces there are being rapidly reduced, and when our movements become known, it is certain they must throw forces into middle Tennessee and Kentucky, or lose those regions. If you hold them in check, we are sure of success here; but should they reinforce here so as to defy us, then you may redeem west Tennessee and probably aid us by crushing the enemy's rear."
On August 27, just as his army was got into vigorous motion, General Bragg wrote to Van Dorn again as follows: "We move from here immediately – later by some days than expected; but in time, we hope, for a successful campaign. Buell has certainly fallen back from the Memphis and Charleston railroad, and will probably not make a stand this side of Nashville, if there. He is now fortifying that place. General E. K. Smith, reinforced by two brigades from this army, has turned Cumberland Gap and is now marching on Lexington, Kentucky. General Morgan (Yankee) is thus cut off from all supplies. General Humphrey Marshall is to enter eastern Kentucky from western Virginia. We shall thus have Buell pretty well disposed of. Sherman and Rosecrans, we leave to you and Price, satisfied you can dispose of them, and we confidently hope to meet you upon the Ohio."
Two days later, on August 29, Bragg telegraphed Price, saying: "Buell's force is in full retreat upon Nashville, destroying