In consequence of this refusal to parole Colonel Streight, the Government suspended the exchange of Confederate officers, and General Morgan and his officers were thrown into the penitentiary of Ohio.
Colonel Streight was subsequently released from imprisonment.
It was toward the end of June that General Rosecrans commenced a series of movements, which were designed to bring on a conflict between the forces under his command, and the rebels under General Bragg. His purpose was to march small portions of his army on Shelbyville, and by feints give an idea that a serious movement was intended in that direction; while his really decisive blow was aimed at Tullahoma. Accordingly the Twentieth corps, under General McCook, was selected to make the advance on the right; and about seven o’clock General Sheridan’s division, preceded by five companies of mounted infantry, under Lieutenant-Colonel Jones, proceeded on the way to Shelbyville. During the night, this division bivouacked on each side of the wood, and the divisions of General Johnson and Davis advanced six miles on the road, and on the left turned to Liberty Gap. The following day was very stormy—notwithstanding which the mounted infantry under Colonel Wilder, marched along the road leading to Manchester, and were closely followed by General Reynolds, with the remainder of his division.
At about nine o’clock in the morning, Colonel Wilder met the enemy’s pickets eight miles from Murfreesboro’, and drove them, together with all their reserves, on a quick run before him, to beyond Hoover’s Gap, which is a long winding hollow through a chain of hills which divide the Stone and Duck rivers. For about two-thirds the distance through the gaps the rebels had fortified a strong position, but were driven so closely by the men under Colonel Wilder, that before they had time to deploy into their works, the Union soldiers were inside also. The rebels fled instantly, leaving behind the battle-flag of the First Kentucky cavalry regiment, and also forty-two prisoners. For full four miles beyond Hoover’s Gap, Colonel Wilder’s men drove them on a sharp run; when he heard the long-roll sounded in the enemy’s infantry camp two miles beyond the Garrison Fork, down Duck river toward the right. Immediately the proper dispositions were made for an expected fight, for Colonel Wilder determined to hold the gap until General Reynolds with his force should come up to his assistance. Almost on the instant, two brigades of rebel infantry came up on the double-quick, and formed in line of battle; the Unionists poured a volley into their ranks, which caused them to hastily turn about and beat a retreat; upon the right of Colonel Wilder’s column five regiments of rebels had charged, and outflanked the Seventeenth. The Ninety-eighth Illinois, Colonel Fernhouser, hastened to their relief, before whom the rebels did not stand more than five minutes. Wheeling about, the enemy, despite the cries and entreaties of their officers, beat a hasty retreat, and with great noise and clatter carried their batteries away with them, and posted them behind some hills in their rear. General Reynolds’ division held possession of the gap.
During these and subsequent preliminary movements, the rebel position was as follows: Bragg’s main army occupied a strong position north of Duck river, with their cavalry on the right toward McMinnville, and their infantry extending from Shelbyville to Wantrace; on the left, toward Columbia and Spring Hill, Forrest was concentrating and threatening Franklin. Their main base of supplies was, of course, at Chattanooga; but their superior and efficient cavalry force had enabled them to command all the resources of Duck river valley, and the country toward the south. Tullahoma, the large intrenched camp of the rebels, was situated on the “barrens” at the intersection of the Nashville and Chattanooga railroad with the McMinnville branch, and was their main depot. The rebel infantry was well protected by a high range of rough and rocky hills; the principal routes passed southward from Murfreesboro’ toward Tullahoma, and the enemy’s line of communications. By the way of McMinnville, Tullahoma is distant seventy-five miles from Chattanooga; the Manchester pike passes the hills above referred to, goes through Hoover’s Gap, and ascends to the “barrens,” through a long and difficult cañon called Matt’s Hollow. The Wantrace road passes through Liberty Gap, and into a road which runs parallel with the railroad at Bellbuckle Gap. The Shelbyville road runs through a defile called Guy’s Gap. A road called the Middleton dirt road, is also situated near here; and the road along Versailles runs into the Shelbyville and Triune roads, neither of which have any passes, and but few defiles.
The enemy held all these passes, his main position being in front of Shelbyville, and strengthened by a redan line which extended from Horse Mountain on the east, to Duck river on the west, and was covered by a line of abattis.
It being still uncertain whether the enemy would advance to test the strength of the whole Union force, the following disposition of the latter was made for the 25th: Major-General Crittenden was ordered to advance on Lannon’s Stand, and from thence open communication with General Thomas, who was then to drive the rebels toward Fairfield, where the Fourteenth corps was stationed to receive them; and General McCook, with that portion of his corps under his own immediate command was to make a feint along the Wantrace road by the way of Liberty Gap. General Stanley, with the cavalry under his command, was to occupy the attention of the rebels at Fosterville; while General Granger with the infantry, was to support Stanley at Christiana. If General Thomas succeeded in his manœuvre, and found the rebels retreating towards Wartrace, he was to cover that road with a division, and thus move on to Manchester with the remainder of his command, while General McCook, moving in on Beech Grove, was to hold Liberty Gap with one division, and after a time to withdraw quietly, leaving a force sufficient to protect it, and move on to Manchester.
During this day it rained heavily and continuously; and General Brannan was, in consequence, prevented from joining the Fourteenth corps as soon as was necessary. Finally everything was in position; General Reynolds’ division advanced upon the heights toward Fairfield, but made no demonstration against the enemy. At Liberty Gap the enemy endeavored to regain possession, but were utterly routed, and compelled to leave it in possession of the Unionists.
The greater part of the movements ordered on the 25th were completed on the 26th, notwithstanding the drenching rain which had continued day and night. The divisions of Generals Reynolds, Rousseau and Brannan, made a combined advance upon the enemy, and forced him to retreat toward Fairfield; Wilder’s cavalry seized Matt’s Hollow, and held it, thus securing the passage toward Manchester for Reynolds to move forward with his division, which the gallant General did during the same night. Headquarters were established in Manchester during the 27th; and in the course of the night all the remaining portion of General Thomas’ corps came in from the different directions in which they had been posted. All was now in readiness to prepare for the coming contest; rations were distributed to the troops, and the column was closed up around Manchester.