Generals Heintzelman and Sumner united their commands toward the right, on the line of the Yorktown road. General Hooker, finding himself so severely pressed, sent to General Heintzelman for reinforcements, but he was away, and the message was read and returned to General Hooker by General Sumner, who endorsed it, “opened and read by the senior officer on the field.” After some time spent in painful suspense by General Hooker, he was cheered by the arrival of General Peck with his brigade, forming the advance of General Couch’s division, which arrived on the ground at one o’clock, having marched up from Lee’s Mills, ten or twelve miles, that morning, in the midst of a pouring rain, and through mud ankle deep. General Hooker being sorely pressed, the men were marched at once into the field, taking a position on his right, in the centre of the army, where they were at once exposed to the full force of the enemy’s fire. For two hours they held their position against terrible odds. Twice they were driven back, and twice they rallied again, and recovered their ground.
When the brigade first reached the field, the One Hundred and Second Pennsylvania advanced to the front, delivered its fire, and fell back, giving place to the Ninety-eighth Pennsylvania, which held the ground until the One Hundred and Second rallied, and the two maintained the position. The Fifty-fifth New York, De Trobrian’s Zouaves, came up on the left and then retired, while the Sixty-second New York held the rebels in check, and the One Hundred and Second and Ninety-eighth Pennsylvania delivered a cross-fire. The Fifty-fifth then formed a new line of battle, and advanced to the support of the Sixty-second, and the Ninety-third Pennsylvania came up and opened fire on a battery commanding the road, until the rebels were driven back at all points.
The Federal reinforcements were at last coming up to the scene of action. Urgent requests for aid had been sent to the rear, and Governor Sprague rode back from the field to Yorktown, to report the facts to General McClellan and urge forward the requisite assistance. In the mean time General Kearney, with his division, a part of General Heintzelmar’s corps, had received orders from him to press on with the utmost haste, which was done. He arrived, closely followed by General Berry, with his brigade, when they took a position on the extreme left, in order to prevent flanking by the enemy. The Third Michigan was ordered to the left as a support, while General Berry moved forward with the remaining regiments, arriving on the ground at about half-past two o’clock, P. M. The Fifth Michigan, Colonel Terry, proceeded to the left of the road, in front of some fallen timber and the rifle-pits, while the Thirty-seventh New York, Colonel Hayman, went still further to the left. The Second Michigan occupied a position on the right of the road. As soon as these arrangements were completed, an order was given for the troops under General Berry to advance and charge, which they did in a splendid manner, driving the enemy entirely out of the timber. At this charge the enemy lost sixty-three men killed. The rebels, being posted in the rifle-pits, caused the Federal troops much annoyance. The Fifth Michigan, however, soon compelled them to retreat, although it lost a great many of its men in the effort.
The enemy had the advantage of protection, while the Union men were obliged to expose themselves in bold relief. The Federal bullets could not penetrate the earthworks around the rifle-pits, and the only way to drive the enemy out was to make a bayonet charge. This charge was made in splendid style by the Fifth Michigan in front, and the Thirty-seventh New York at the left, the men pushing up to the pits near enough to bayonet the riflemen behind them. By this charge considerable loss was occasioned on both sides.
When General Kearney’s troops were coming into action, they met the lengthened files of General Hooker’s wounded being carried to the rear. The shrieks of the lacerated and bleeding soldiers, who had been fighting so long and so well, pierced the air, and this, joined to the mud and rain, and the exhaustion of those who had come several miles on a forced march, was not calculated to produce a favorable impression on them as they were going into action. General Heintzelman, however, ordered several of the bands to strike up national and martial airs; and, when the strains of these familiar tunes reached the ears of the wounded, their cheers mingled with those of the soldiers who were just rushing into the battle. The effect was wonderful on the other side; for some of the prisoners state that when they heard the bands strike up the Star-Spangled Banner, followed by that enthusiastic cheer, they knew that the victory would be ours.
The Third and Fourth Maine regiments having been detached from General Birney’s brigade, and temporarily assigned to General Emory, General Birney came forward with the two remaining regiments,—the Thirty-eighth New York, Colonel J. H. Ward, and the Fortieth New York, Colonel Reilly. These were deployed to the right of the Hampton road, and, like those under General Berry on the left, relieved fragments of regiments which had borne the brunt of the battle since its commencement. All this time the rebel artillery was sending a rapid fire into the Federal ranks.
The Thirty-eighth New York regiment was ordered to charge down the road and take the enemy’s rifle-pits in front by the flank. Colonel Ward led seven companies of his regiment in this most brilliant and successful charge. The other three companies, under Lieutenant-Colonel Strong, were doing efficient service in an adjacent portion of the field.
The battle had now been raging uninterruptedly from an early hour in the morning, and seemed at last to be checked by the heroic conduct and successful charge of General Kearney’s troops. The extreme left was still heavily pressed, however, by the obstinate force of the rebels in that part of the line.
To General Hancock was intrusted the most dangerous, because the boldest manœuvre of the day. He passed with his brigade—the Fifth Wisconsin, Colonel Cobb; the Sixth Maine, Colonel Burnham; the Forty-ninth Pennsylvania, Colonel Lowrie; the Seventh Maine, Colonel Mason, and the Thirty-third New York, Colonel R. F. Taylor, supported by Lieutenant Cowan’s and Captain Wheeler’s batteries—to the right, for a mile parallel to the front, but completely hidden by the forest. Thence across a fifty-acre heath edged with timber, north to the extreme left of the enemy’s line of works. At this point the rebels had dammed a creek which empties into York river, and straight across the narrow causeway frowned an earthwork, which looked imposing as a castle from its commanding position on the opposite hill.
General Hancock found this singular defence deserted, but it was with caution his skirmishers ventured across the dam and planted the Federal flag on the parapet, fifty feet above water mark. Then the whole force went over at double-quick, turned to the left, and followed a narrow, dangerous road, a gorge cut in the hill-side by the pond, till it emerged in turn, from the east, on the open battle-field.