During the short struggle both batteries changed position several times, and did so with excellent results and in the best possible manner, Captain Dilger using much judgment in the selection of his several positions. They did not leave their immediate locality until the corps was ordered by the commanding general to fall back to Cemetery Hill. About 11 a. m. Lieutenant Wilkeson reached the field, and was ordered to report to General Barlow, commanding the First Division, which was engaged about three-fourths of a mile from the town and on the left of the York pike. The battery was assigned position by General Barlow, and when I reached the ground I found it unfortunately near the enemy's line of infantry, with which they were engaged, as well as two of his batteries, the concentrated fire of which no battery could withstand. Almost at the first fire, Lieutenant Wilkeson was mortally wounded, and carried from the field by 4 of his men. The command of the battery now devolved upon Lieutenant Bancroft. By changing position several times, the battery maintained its relative position until the division fell back to the town, when it retired to Cemetery Hill. During this engagement the battery was separated into sections or half batteries, and its struggle to maintain itself was very severe and persistent. Captain Heckman was not ordered in until the corps had begun to fall back. He was then put into position, with a view of holding the enemy in check until the corps had time to retire through the town to the hill beyond, and though he worked his battery to the best of his ability, the enemy crowded upon it, and was within his battery before he attempted to retire. SHes was compelled to leave one gun in the hands of the enemy. I think no censure can be attached to this battery for the of the gun. The batery was so severely disabled otherwise that I was compelled to send it to the rear, thus losing the benefit of it during the fight of the second and third days. Captain Wiedrich was assigned, on his arrival upon the field, to a position on the hill immediately in front of the cemetery entrance and overlooking the town. She was engaged several times during the day with the enemy's artillery at a long range. He maintained the same position during the three days' fighting, but on this p. m. Colonel Wainwright, chief of artillery First Corps, took command of his battery, with the artillery on that side of the Baltimore pike. The artillery of the corps ceased firing for the day, when the corps fell back to Cemetery Hill. I would remark here that during the p. m. of the 1st and the a. m. of the 2d, I furnished Colonel Wainwright, Chief of artillery First Corps, with ammunition from the Eleventh Corps train, the train of the First Corps not being within reach. This of necessity caused considerable annoyance later in the engagement, on account of the difficulty in procuring a supply of ammunition sufficient to cover the great expenditure wd were compelled to make throungh the engagement. On the morning of the 2d, I applied to General Hunt, chief of artilery Army of the Potomac for a greater amount of artillery than we then had, as our position was finely adapted to its use, and I did not consider that we had sufficient to assist our small infantry force in holding the position if the enemy should attack us in heavy force. The following batteries were ordered to report to me: Battery H, First U. S. Artillery, Lieutenant Eakin, six light 12-pounders; Fifth New York Independent Battery, Captain Taft, six 20-pounder par-