[Illustration: Dormitory of Gettysburg College.—The dormitory of Gettysburg (then Pennsylvania) College sheltered many Union and Confederate wounded] THE SECOND DAY The scene of the engagements of the second and third days shifted to the south and southeast of Gettysburg. General Meade arrived on the field from his headquarters at Taneytown, Md., at 1 A.M., July 2nd, and established his headquarters at the Leister House, on the Taneytown Road, in rear of the line of the 2nd Corps. As soon as it was light he inspected the position already occupied and made arrangements for posting the several corps as they should reach the ground. The Union Line of Battle. Starting on the right with Slocum’s 12th Corps, Williams’ Division extended from Rock Creek by way of Spangler’s Spring to Culp’s Hill, with Geary’s Division on the hill. The line between Culp’s Hill and Cemetery Hill was held by Wadsworth’s Division of the 1st Corps. Barlow’s Division of the 11th Corps under Ames was located at the foot of East Cemetery Hill. Carman, Colgrove, Slocum, Geary, and Wainwright avenues follow these lines of battle. On Cemetery Hill, across the Baltimore Pike, the line was held by Schurz and on his left Steinwehr, both of the 11th Corps. Robinson’s Division of the 1st Corps extended across the Taneytown Road to Ziegler’s Grove. Beyond lay Hancock’s 2nd Corps, with the Divisions of Hays, Gibbon, and Caldwell from right to left. To the left of Hancock, Sickles’ 3rd Corps, consisting of the Divisions of Humphreys and Birney, prolonged the line to the vicinity of Little Round Top. Beginning at the Taneytown Road, Hancock and Sedgwick avenues follow these lines of battle. Arriving later in the day, the 5th Corps, under General Sykes, was posted on the Baltimore Pike, at the Rock Creek crossing. Later it occupied the ground about Round Top to the left of the 3rd Corps. The 6th Corps, under General Sedgwick, reaching the field still later after a march of over 30 miles, was posted in reserve back of Round Top, from which position portions were moved as circumstances demanded. The lines held by the 5th and 6th Corps coincide with Sykes, Ayres, Wright, and Howe Avenues. [Illustration: Stevens’ Knoll.—Arriving on Stevens’ Knoll at the end of the first day, General Slocum brought supporting troops. The lunettes protecting the cannon remain intact.] Gamble’s and Devin’s brigades of Buford’s Cavalry, which had had an active part in the battle of the first day, were on the left between Cemetery and Seminary Ridges until 10 A.M. when they were ordered, by some mistake, to move to Westminster, Md., before the arrival of Gregg’s Division on its way from Hanover, and Merritt’s brigade of Buford’s Division from Mechanicsburg (now Thurmont), Md.