At nine o'clock in the evening of the 1st of July, we were on the road, but it was eleven before we were fairly under headway. Those who during the day had indulged so freely in the rye whisky of the farmers, as to disable them from marching or even standing in line, were quietly thrown into the clumps of bushes by the roadside, and left to be gathered up by cavalry squads that were scouring the country for stragglers. Those that were left by our own provost-guards were picked up by rebel scouts.

The column now pushed rapidly on; all night the weary march was kept up. A halt of ten minutes for breakfast, and then on again. Now we heard that a part of the army, the First corps, had already engaged the enemy at Gettysburgh, with doubtful issue, and that its commander, General Reynolds, was killed.

New ardor was now kindled in the breasts of the men of the Sixth corps at these tidings, and they pressed forward at a pace unusual, even for them. The day was bright, the sun pouring scalding rays from a cloudless sky. The men strove hard to keep in the ranks, for few in that corps were willing to be left behind in a fight.

Yet some gave out from exhaustion, but even these, at a slower pace, followed the rapidly moving column.

At the houses on the roadsides, the citizens, their wives and daughters, were bringing water, from which the soldiers filled their canteens as they passed. At Littletown we saw citizens bringing the wounded from the field in their carriages, and many wounded soldiers who could walk were making their way to the village. The marching was more rapid. Our friends were waiting for us. Soon we saw above the valley that lay before us, clouds of smoke and the white puffs of bursting shells. As yet we could distinguish little of the sound of battle, but those small fleecy clouds which appeared so suddenly, flashing forked lightning, told us of work ahead. It was five o'clock when the Sixth corps arrived on the battle-field, having made an unprecedented march of thirty-four miles! We halted in reserve, not to rest, but to wait a few moments until our place should be assigned us in front. We had more marching to do! Four miles more of marching and countermarching that night, made thirty-eight miles in a single day. Such marching as had been done by the Sixth corps since leaving Bristow Station, is unparalleled in the history of armies.

The roar of battle was terrific. On our left, where rose a hill covered with timber on the top and side, a fearful struggle seemed in progress, and the roll of musketry and the rapid discharge of artillery was almost deafening.

Let us now turn back and review the operations of the First and the Eleventh corps since yesterday morning. We give it as it was related to us by members of the First and Eleventh corps. General Buford, commanding the cavalry on the left flank of the army, had advanced north of the town of Gettysburgh, and had fallen in with large bodies of cavalry, supported by infantry. He became hotly engaged with this force, and at once reported the information to General Meade that he had found the enemy in large force. General Reynolds, who, with the First corps had by this time reached Marsh creek, within easy striking distance of Gettysburgh, was directed to urge his troops forward to Gettysburgh as rapidly as possible. The corps pushed on, and reaching Gettysburgh, filed through the town, leaving it to the rear. General Buford was found fiercely struggling to maintain his position against the infantry of the enemy. At once, General Reynolds proceeded to select a position for his line of battle. Without a moment's hesitation, the corps was deployed; the division of Wadsworth, leading the van, was in position; a battery which had been brought to the front was slowly forced back, but the gallant Wadsworth, bringing more infantry into line, arrested the retreat, and in turn forced back the hostile forces, who were now found to be in large numbers. It was at this time that General Reynolds, riding forward with a few members of his staff, to inspect the field with the view of bringing the rest of his troops into favorable position, was shot through the neck, the enemy having, at the moment, opened a full volley of musketry. The noble commander, feeling the wound, turned to his soldiers and shouted, "Forward men! for God's sake, forward!" and fell, dying, into the arms of one of his companions.

This sad loss only fired the hearts of the soldiers to more desperate determination, and they rushed into line upon the run, burning to avenge their beloved leader. General Doubleday, of the Second division of the corps, was next in rank, and took command. The encounter was sharp, and the rebels were giving way. Three hundred prisoners were brought in, and the corps was put into position to hold its ground. The force of the enemy now engaged, proved to be the corps of General A. P. Hill, and the prisoners declared that the rest of the confederate army was close at hand. A column of the enemy now moved toward the left of our line, debouching from a piece of woods, and occupying a close proximity to our forces. Volley after volley was poured into the advancing column, without avail, except to stretch many of its men upon the ground, wounded and dying.

At length the brigades of Doubleday's own division were ordered to charge upon the obstinate line. They obeyed with alacrity, their cheers and shouts ringing above the roar of musketry. The rebels gave way before this impetuous charge, and several hundred more prisoners were brought in.

Thus far the First corps was victorious, but its ranks were becoming terribly thinned.