As the remainder of our Corps had come up, they took position on the right of the First Corps. We now rejoined them there, our own right resting on Rock Creek. Immediately we began to throw up breastworks, and by evening had built for ourselves quite respectable entrenchments. It rained during most of the night; but in spite of that and the enemy, we secured a good rest for the next day's work.
Early the next morning we were stirring, in anticipation of an attack; but until noon there was nothing but skirmishing in our vicinity. Then the storm broke loose on the extreme left of the line, near Little Round Top, where Sickles's Corps was situated. The place was entirely hidden from our sight, and from the sounds we could form no opinion as to how things were going; but we were constantly receiving reports that Sickles was either holding his own or driving the enemy before him. In the light of subsequent events, these reports seem to have been purposely colored, in order to keep up our spirits. Occasional demonstrations along our front kept us in constant expectation of being attacked, but nothing of the sort occurred.
About six o'clock we were hurried out of our entrenchments at a double-quick toward Little Round Top, where it was understood that Sickles's Third Corps had been driven back with severe loss. But before we arrived, the enemy had been repulsed, and the firing ceased. We were now started back to our entrenchments. We found, however, upon our arrival, that the enemy had in our absence taken possession of them. It was exasperating to see them benefitting by our labors, but we were somewhat consoled by the capture of a picket of twenty Confederates, who in the darkness had wandered into our line as we approached. We were now obliged to form a new line, connecting with our forces on the left as before, but swinging back at an angle on the right to Rock Creek. We thus presented to the enemy a semi-circular front, which they could not penetrate without being subjected to a cross fire from both sides.
During the night we remained unmolested. At daylight the firing commenced. The ground occupied by the enemy's skirmishers was a rocky bit of woodland which furnished abundant cover for sharpshooters. For a while they annoyed us, but by nine o'clock we had dislodged them, and driven them back to the cover of their breastworks. On our left the enemy were making desperate efforts to dislodge from their entrenchments Greene's Brigade and the troops of the First Corps. Six times they came up to the assault, and six times were repulsed, leaving the ground over which they advanced literally covered with their dead. At about eleven o'clock a portion of our Division followed up these successes by charging the Confederates in our front and sweeping them entirely out of our entrenchments. They retired only a short distance, however, showing that they had not abandoned the contest.
For nearly two hours, complete quiet now succeeded the roar and din of the battle. Not a cannon was fired. Only an occasional musket shot disturbed the silence that prevailed from one end of the field to the other. We all felt, however, that this was but a lull before the final burst of the storm. The losses in our Regiment had thus far been light, and our spirits ran high. We felt entire confidence that no force that the Southerners could bring against us could by direct assault break our line at any point.
About one o'clock, the first shot was fired in the tremendous artillery duel that preceded the last desperate attempt to penetrate our center at Cemetery Ridge. In five minutes three hundred guns were pouring into one another, their deadly showers of shot and shell, and making fearful havoc of every thing that was not sheltered. From our position in the woods we could see nothing of what was going on in other parts of the line; but the air above was filled with screaming shells, as they flew back and forth on their deadly errand. In some instances, shells from the Confederate batteries in front of the Second Corps would pass entirely over our lines, and land near the enemy in our front; a great many of them fell in the open space in our rear.
At one time during the progress of the cannonade, a battery was placed in position on a hill across Rock Creek directly in front of our Regiment, and began to drop shells unpleasantly close to us. But our friends of Battery M, of the First New York Artillery, who had been with us since the Brigade was organized, seemed to get their range at once, and promptly silenced them. On a trip over the field, the next day, I found the position where they had been stationed marked by a dozen dead horses and two exploded caissons.
During the cannonading, I took occasion to go back into the woods a short distance in order to get a view of what was going on. Everything in sight gave evidence of the severity of the fire. All those who were not actively engaged had sought the shelter of rocks and trees or the inequalities of the ground. Here and there mounted officers and orderlies were riding across the field, although at first sight it seemed as though a bird could scarcely fly over it unharmed.
In the course of an hour the terrific artillery fire slackened. Then for a few minutes it nearly ceased. In the interval of silence, Pickett's Division of Confederates was marching to the charge. From my position I could not see them coming on, but I knew that they were charging by the old familiar Southern yell. Soon that was drowned in the roar of musketry and artillery. For a time all was turmoil and confusion. At length the hearty cheers of our comrades rang out, and we knew that the Confederate tide of invasion had been safely rolled back.
While this assault was being made on the center, constant demonstrations were being made on our front, and we momentarily expected an attack. None came, however, although during all the rest of the day the enemy presented an unshaken line. At night they silently withdrew, and on the morning of the 4th our reconnoitering parties could find nothing of them east of Seminary Ridge, save their dead and severely wounded, whom they had left on the field.