In his advance into Gettysburg, Early was opposed by the 26th Emergency Regiment of Pennsylvania Volunteers, Company A, consisting of students of Pennsylvania (now Gettysburg) College, citizens of the town, and some volunteers from Harrisburg. After skirmishing on the Chambersburg Pike about 3 miles from the town, this regiment was obliged to retreat, finally reaching Harrisburg. About 175 were captured, but were afterward paroled. On the same day, George Sandoe, a Union scout, was shot by one of Early’s pickets on the Baltimore Pike. He was the first Union soldier killed in the vicinity of Gettysburg prior to the battle. On account of the absence of his cavalry under Stuart, who had been left with five brigades to guard the rear and hold the gaps of the Blue Ridge, Lee did not know until June 28th that the Union Army had crossed the Potomac and was threatening his line of communication with the South. Learning this, he ordered a concentration of his forces at Cashtown. Meade’s Movement. On assuming command, General Meade moved his army northward from the vicinity of Frederick and established a tentative line along Pipe Creek, between Manchester on his right and Emmitsburg on his left, with headquarters near Taneytown. Stuart’s Movement. After the Union Army crossed the Potomac, Stuart left the line of the Blue Ridge with three brigades of cavalry and made a raid around the Union Army, crossing the Potomac at Seneca Creek and moving thence to Hanover, where he engaged Kilpatrick’s Division of Union cavalry on June 30th. Passing through Jefferson, Dover, and Dillsburg to Carlisle, he reached Carlisle on the afternoon of July 1st, getting into communication with Lee, after an interval of a week. Situation of Confederate Forces on June 30th. On June 30th, Pender’s Division, Hill’s Corps, moved from Fayetteville to Cashtown; Anderson’s Division to Fayetteville; Rodes’ Division, Ewell’s Corps, from Carlisle via Petersburg to Heidlersburg. Early’s Division advanced from York through Weiglestown and East Berlin, and encamped 3 miles from Heidlersburg. Johnson’s Division marched from Greenvillage to Scotland. Hood’s and McLaws’ Divisions, Longstreet’s Corps, moved from Chambersburg to Fayetteville; Pickett’s Division remained at Chambersburg. Lee’s headquarters were at Greenwood. Situation of Union Forces on June 30th. On June 30th the 11th Corps was at Emmitsburg, the 1st at Marsh Creek, the 3rd at Bridgeport, the 5th at Union Mills, the 6th at Manchester, the 12th at Littlestown, the 2nd at Taneytown. Two brigades of Buford’s Cavalry Division were at Gettysburg; Gregg’s Cavalry Division was at Manchester; Kilpatrick’s at Hanover. Meade’s headquarters were at Taneytown. The Approach.