The gunboats opened fire when a mile and a half from the fort, and continued advancing slowly and firing rapidly till the ironclads were within four hundred yards of the battery. The boats could use only their bow-guns, three on each boat. After a severe action of an hour and a half, a solid shot entering the pilot-house of the flag-ship, carried away the wheel, and the tiller-ropes of the Louisville were disabled by a shot. The relieving-tackles being no longer able to steer or control these boats in the rapid current, they became wholly unmanageable, and drifted down the river. The other two boats were also damaged, and the whole fleet withdrew. There were fifty-four, officers and men, killed and wounded on the fleet—Commodore Foote being one of the wounded. The flag-ship alone was struck fifty-nine times. One rifled gun on the Carondelet burst during the action. The terrible pounding by the heavy navy guns seems to have inflicted no injury upon the earthworks, their armament, or the men.
Transports arrived in the course of the day, bringing additional reinforcements. General McArthur was ordered at 5 P.M. to occupy ground on the extreme right of the National line, to act as a reserve to General Oglesby. He reached the assigned position in the dark, about 7 P.M., and "encamped for the night, without instructions and without adequate knowledge of the nature of the ground in front and on the right." The troops, without shelter and without fires, suffered another night of cold and wind and snow and sleet, after a day without food.
In the night, General Floyd, in council with General Pillow, General Buckner, and Colonel Gilmer, determined to make a sortie in the morning, and, if practicable, cut a way out, and retreat by the Wynn's Ferry road to Charlotte. Pillow was to begin with an attack on McClernand's right, assisted by the cavalry. When he should succeed in pushing back the right, Buckner was to issue from the works and strike the division near its centre. When the whole of the division should be rolled back onto Lewis Wallace, leaving a cleared way out into the country over the road, Pillow's division was to lead, and Buckner to hold the National forces back and afterward serve as rear-guard on the retreat to Charlotte. The brigade commanders were sent for and received instructions. No instructions were given to them, nor was anything said in the council, as to what supplies the troops should carry, and some regiments took neither knapsacks nor rations. Before dawn, Saturday, the 15th, Pillow's division began assembling, as on the previous day, on open ground in rear of the extreme left of the intrenchments. Colonel Baldwin, who was posted with two of his regiments, the Twenty-sixth Tennessee and Twenty-sixth Mississippi, in Pillow's portion of the intrenchments, while the rest of his brigade was west of Indian Creek, under Buckner, held the advance, the Twentieth Mississippi being added to his command, giving him a temporary brigade of three regiments. Colonel Heiman, with his brigade and Maney's battery, strengthened by the Forty-second Tennessee, were to remain in position and thence aid the attack while it was going on. The Thirtieth Tennessee was to occupy the trenches vacated by Buckner, while the Forty-ninth and Fiftieth Tennessee were to act as garrison to the main work—the fort.
Commodore Foote wrote to General Grant desiring an interview with him, and asking, as he was disabled by wounds, to be excused from going to see Grant, requested that the interview be held on the flag-ship. The Twentieth Ohio, which had arrived on transports the evening before and was ordered to report to General Lewis Wallace the day before, while marching after breakfast from the boats to the fort, met General Grant with some of his staff riding down the river road to where the boats lay. The sally had been made and the attack begun; but there was nothing in the sound that came through several miles of intervening forest to indicate anything more serious than McClernand's previous assaults.
Baldwin's brigade, leaving the intrenchments at 6 A.M., marched by the right flank out a narrow and obstructed byroad, crossed the valley in front of the works, and, while ascending the slope beyond, encountered what they supposed to be a line of pickets. But Oglesby's hungry men had slept little that cold night, and by simply rising to their feet were in line of battle. Baldwin's brigade, in attempting to deploy, was thrown into confusion, repeatedly rallied, and was thrown into disorder and pushed back before its line was established. Colonel Baldwin, in his report, says that deployment forward into line would have brought his men into such an exposed situation that he threw his regiment first into column of company, then deployed on the right into line, and admits that practising tactics with new troops under fire is a different thing from practice on the drill-ground. The movement that Colonel Baldwin attempted with his leading regiment, the Twenty-sixth Mississippi, is the same that General Sigel accomplished at Pea Ridge with such brilliant effect, where he had by artillery fire to drive back the enemy's line to gain room for each successive deployment.
The firing sufficiently notified General McArthur where he was, and, without waiting for orders, he formed his brigade into line on Oglesby's right. Pillow's division, continually filing out from the intrenchments, continually extended his line to his left. McArthur, to gain distance to his right, widened the intervals between his regiments, refused his right, and prolonged it by a skirmish line. Oglesby brought into action Schwartz's battery, then commanded by Lieutenant Gumbart, and the batteries in position in the besieged intrenchments joined in the combat. A tenacious fight, face to face, ensued—so stationary that its termination seemed to be a mere question of endurance and ammunition. General Pillow moved the Twentieth Mississippi by wheeling its left to the front. In this position the regiment suffered so severely that it withdrew and took shelter behind a rising ground. A depression was found by which General B.R. Johnson's brigade could find comparative protection while moving to their left and gaining distance to their front. General McArthur found his right flank turned and his ammunition nearly exhausted, and withdrew his brigade to a new position several hundred yards to his rear. Oglesby moved the Eighteenth Illinois to the right, to partially fill the vacated line, and brought up the Thirtieth Illinois from its position in reserve to take the place left by the Eighteenth. Colonel Lawler, of the Eighteenth, was wounded early in the engagement. Captain Brush, who had succeeded to the command, was wounded while carrying out this movement. The ammunition of the Eighteenth being now nearly gone, it retired in good order to replenish, leaving 44 of its number dead, and 170 wounded on the ground where it had stood.
McClernand, when he found his command heavily pressed, sent to Lewis Wallace, the adjoining division commander, for aid. Wallace sent to Grant's headquarters for instructions, but the General was away on the flag-ship, and his staff did not take the responsibility of acting in his place. Wallace, having been ordered to act on the defensive, declined to move without first receiving an order. When McArthur fell back, Oglesby's right became enveloped, McClernand repeated his request, and Wallace, seeing the affair was serious, took the responsibility, and ordered Cruft's brigade to advance. The Twenty-fifth Kentucky, on coming up, by some mistake fired into the Eighth and Twenty-ninth Illinois. These regiments and the Thirtieth Illinois broke and retired. The Eighth had lost 55 killed and 188 wounded; the Twenty-ninth, 25 killed and 60 wounded; the Thirtieth, 19 killed and 71 wounded. The wounded had been taken off to a building in the rear, which was turned into a hospital. Cruft maintained his position stoutly, receiving and making charges, and firing steadily from line. His men found the same difficulty that is mentioned in reports of other commanders, of distinguishing the enemy except when close at hand, or in motion. Their uniform, of the same color with the dead leaves of dense scrub-oak, uniforms and foliage at a short distance were undistinguishable. McArthur drew his brigade back out of the contest, halted, and obtained ammunition and rations. His men, who had fasted thirty-six hours, had one good meal before they moved toward night to the extreme left, in support of the troops there engaged. Cruft's brigade, being isolated, finally retired to the right and rear, and took position near the hospital.
When the rest of Oglesby's brigade retreated, the Thirty-first Illinois, Colonel John A. Logan, the left of the brigade and connecting with the right of Colonel W.H.L. Wallace's brigade, wheeled so as to have its line at right angles with the line of the enemy's intrenchments; for, as McArthur's and Oglesby's commands crumbled away, Pillow's division, rolling up McClernand's, were now advancing in a course parallel to the front of their intrenchments. The Thirty-first held its ground; but yielding was only a question of time. As Pillow's division in deploying continually increased its front, Colonel Baldwin's brigade was continually pressed to his right and came in front of W.H.L. Wallace's brigade. McCausland's brigade, consisting of the Thirty-sixth and Fiftieth Virginia, formed on Baldwin's right and in front of W.H.L. Wallace, Their assault was aided by the batteries in position in the intrenchments, and Wallace's batteries alternately replied to the artillery and played upon the line of infantry. Wallace held his line, and Pillow sent to Buckner to advance. Buckner held his command within the intrenchments massed, waiting for his opportunity. He sent three regiments, Third Tennessee, Eighteenth Tennessee, and Fourteenth Mississippi, across the intervening hollow. They attacked with spirit; but, confused by the missiles flying overhead, broken by pushing through the snow-covered boughs, and galled by the hot fire they encountered, they quickly fell back in disorder, and, according to General Buckner, communicated their depression to the rest of his command.
Toward noon, as McClernand's right was rolled up and began to crumble, Buckner, who had cheered his men, now led his division farther to his right, near to Heiman's position in the intrenchments; there he approached under cover till near Wallace's line. Three batteries supported his charge—Maney's, Porter's, and Graves', these three batteries concentrating their fire on Wallace's artillery. Forrest brought his cavalry forward. Wallace's brigade, with Taylor's and McAllister's batteries, and Logan's regiment, with boxes nearly empty, withstood the combined attack. McAllister fired his last round of ammunition. Taylor had fired seventeen hundred rounds of ammunition, an average of two hundred and eighty-three rounds to the piece. The infantry fired their last cartridge. The batteries of Maney, Graves, and Porter poured in their fire; the divisions of Pillow and Buckner aided—some regiments at a halt firing, but Buckner's advancing. Forrest's cavalry hovered on the outskirts. Wallace gave the command to fall back. McAllister had not horses left to haul off his three howitzers, and had to leave two. The order did not reach the Eleventh Illinois. The rest of the command fell back in regular order, and the Eleventh and Thirty-first continued fighting. Colonel Logan, of the Thirty-first, was wounded; the lieutenant-colonel was killed. Thirty others were killed. The ranks were thinned by the wounded who had fallen and been carried off the field. Ammunition was gone. Logan told Lieutenant-Colonel Ransom, of the Eleventh Illinois, who, having had his wound dressed, had returned to his regiment, that the Thirty-first must leave, and suggested that the Eleventh should take the position left by the Thirty-first. The Thirty-first marched steadily from the field, and the Eleventh, alone now, faced to the rear, wheeled to the left, and continued the fight. But, assailed on both flanks as well as in front, and finally charged by the cavalry, it was broken, and fell back in disorder. The brigade fell back half a mile.
Fugitives from the front passed by General Lewis Wallace, who was conversing with Captain Rawlins, General Grant's assistant adjutant-general. Among them a mounted officer galloped down the road, shouting, "We are cut to pieces." General Wallace at once ordered Colonel Thayer's brigade to the front. Marching by the flank, they soon met portions of Oglesby's and Colonel Wallace's brigades retiring from the field. They all stated they were out of ammunition. Thayer's brigade passed on at a double-quick. Position was taken; a battery, Company A, Chicago Light Artillery, commanded by Captain Wood, was posted across the road; to its right, the First Nebraska and Fifty-eighth Illinois; to the left, the Fifty-eighth Ohio and a company of the Thirty-second Illinois. The Seventy-sixth Ohio and Forty-sixth and Fifty-seventh Illinois were posted in reserve. As soon as this line was formed, interposed between the enemy and the retiring regiments, they halted and waited for ammunition. The line was scarcely formed before a force, coming up the road and through the forest, made a fierce attack. The assault was vigorous. The line remained steady, and, with fire deliberate and well aimed, quickly drove off the assailants. That closed the attack made by the sortie. Colonel Cruft's brigade, the position of which was not then known to General Wallace, was off at the right, near enough to see the repulsed force retire in the direction of the works. Cruft's brigade was brought into alignment with Thayer's, and Wallace held the ground with his division.