Lee’s army was flushed with victory after Chancellorsville and was strengthened by the memory of Fredericksburg. Southern hopes were high after Hooker’s defeat on the Rappahannock, in May, 1863, and public opinion was unanimous in demanding an invasion of Northern soil. On the other hand, the Army of the Potomac, under its several leaders, had met with continual discouragement, and, with all its patriotism and valor, its two years’ warfare showed but few bright pages to cheer the heart of the war-broken soldier, and to inspire the hopes of the anxious public in the North.
Leaving General Stuart with ten thousand cavalry and a part of Hill’s corps to prevent Hooker from pursuing, Lee crossed the Potomac early in June, 1863, concentrated his army at Hagerstown, Maryland, and prepared for a campaign in Pennsylvania, with Harrisburg as the objective. His army was organized in three corps, under the respective commands of Longstreet, Ewell, and A. P. Hill. Lee had divided his army so as to approach Harrisburg by different routes and to assess the towns along the way for large sums of money. Late in June, he was startled by the intelligence that Stuart had failed to detain Hooker, and that the Federals had crossed the Potomac and were in hot pursuit.
Lee was quick to see that his plans must be changed. He knew that to continue his march he must keep his army together to watch his pursuing antagonist, and that such a course in this hostile country would mean starvation, while the willing hands of the surrounding populace would minister to the wants of his foe. Again, if he should scatter his forces that they might secure the necessary supplies, the parts would be attacked singly and destroyed. Lee saw, therefore, that he must abandon his invasion of the North or turn upon his pursuing foe and disable him in order to continue his march. But that foe was a giant of strength and courage, more than equal to his own; and the coming together of two such forces in a mighty death-struggle meant that a great battle must be fought, a greater battle than this Western world had hitherto known.
The Army of the Potomac had again changed leaders, and George Gordon Meade was now its commander. Hooker, after a dispute with Halleck, resigned his leadership, and Meade, the strongest of the corps commanders, was appointed in his place, succeeding him on June 28th. The two great armies—Union and Confederate—were scattered over portions of Maryland and southern Pennsylvania. Both were marching northward, along almost parallel lines. The Confederates were gradually pressing toward the east, while the Federals were marching along a line eastward of that followed by the Confederates. The new commander of the Army of the Potomac was keeping his forces interposed between the legions of Lee and the Federal capital, and watching for an opportunity to force the Confederates to battle where the Federals would have the advantage of position. It was plain that they must soon come together in a gigantic contest; but just where the shock of battle would take place was yet unknown. Meade had ordered a general movement toward Harrisburg, and General Buford was sent with four thousand cavalry to intercept the Confederate advance guard.
On the night of June 30th Buford encamped on a low hill, a mile west of Gettysburg, and here on the following morning the famous battle had its beginning.
On the morning of July 1st the two armies were still scattered, the extremes being forty miles apart. But General Reynolds, with two corps of the Union army, was but a few miles away, and was hastening to Gettysburg, while Longstreet and Hill were approaching from the west. Buford opened the battle against Heth’s division of Hill’s corps. Reynolds soon joined Buford, and three hours before noon the battle was in progress on Seminary Ridge. Reynolds rode out to his fighting-lines on the ridge, and while placing his troops, a little after ten o’clock in the morning, he received a sharpshooter’s bullet in the brain. The gallant Federal leader fell dead. John F. Reynolds, who had been promoted for gallantry at Buena Vista in the Mexican War, was one of the bravest and ablest generals of the Union army. No casualty of the war brought more widespread mourning to the North than the death of Reynolds.
But even this calamity could not stay the fury of the battle. By one o’clock both sides had been greatly reënforced, and the battle-line extended north of the town from Seminary Ridge to the bank of Rock Creek. Here for hours the roar of the battle was unceasing. About the middle of the afternoon a breeze lifted the smoke that had enveloped the whole battle-line in darkness, and revealed the fact that the Federals were being pressed back toward Gettysburg. General Carl Schurz, who after Reynolds’ death directed the extreme right near Rock Creek, leaving nearly half of his men dead or wounded on the field, retreated toward Cemetery Hill, and in passing through the town the Confederates pursued and captured a large number of the remainder. The left wing, now unable to hold its position owing to the retreat of the right, was also forced back, and it, too, took refuge on Cemetery Hill, which had been selected by General O. O. Howard; and the first day’s fight was over. It was several hours before night, and had the Southerners known of the disorganized condition of the Union troops, they might have pursued and captured a large part of the army. Meade, who was still some miles from the field, hearing of the death of Reynolds, had sent Hancock to take general command until he himself should arrive.
Hancock had ridden at full speed and arrived on the field between three and four o’clock in the afternoon. His presence soon brought order out of chaos. His superb bearing, his air of confidence, his promise of heavy reënforcements during the night, all tended to inspire confidence and to renew hope in the ranks of the discouraged army. Had this day ended the affair at Gettysburg, the usual story of the defeat of the Army of the Potomac would have gone forth to the world. Only the advance portions of both armies had been engaged; and yet the battle had been a formidable one. The Union loss was severe. A great commander had fallen, and the rank and file had suffered the fearful loss of ten thousand men.
Meade reached the scene late in the night, and chose to make this field, on which the advance of both armies had accidentally met, the place of a general engagement. Lee had come to the same decision, and both called on their outlying legions to make all possible speed to Gettysburg. Before morning, nearly all the troops of both armies had reached the field. The Union army rested with its center on Cemetery Ridge, with its right thrown around to Culp’s Hill and its left extended southward toward the rocky peak called Round Top. The Confederate army, with its center on Seminary Ridge, its wings extending from beyond Rock Creek on the north to a point opposite Round Top on the south, lay in a great semi-circle, half surrounding the Army of the Potomac. But Lee was at a disadvantage. First, “Stonewall” Jackson was gone, and second, Stuart was absent with his ten thousand cavalry. Furthermore, Meade was on the defensive, and had the advantage of occupying the inner ring of the huge half circle. Thus lay the two mighty hosts, awaiting the morning, and the carnage that the day was to bring. It seemed that the fate of the Republic was here to be decided, and the people of the North and the South watched with breathless eagerness for the decision about to be made at Gettysburg.
The dawn of July 2d betokened a beautiful summer day in southern Pennsylvania. The hours of the night had been spent by the two armies in marshaling of battalions and maneuvering of corps and divisions, getting into position for the mighty combat of the coming day. But, when morning dawned, both armies hesitated, as if unwilling to begin the task of bloodshed. They remained inactive, except for a stray shot here and there, until nearly four o’clock in the afternoon.