The Army of the Potomac under General Meade, 82,00 men and 300 guns.
The Army of Northern Virginia under General Lee, 73,500 men and 190 guns.
Stuart had 11,100 cavalry and 16 guns.
Pleasonton had about the same number of cavalry, and 27 guns.
CHAPTER IV. THE FIRST DAY OF THE BATTLE OF GETTYSBURG, WEDNESDAY, JULY 1, 1863.
On the morning of the 1st of July, General Buford, as stated, held the ridges to the west of Gettysburg, with his cavalry division, composed of Gamble's and Devin's brigades. His vedettes were thrown far out toward the enemy to give timely notice of any movement for he was determined to prevent the rebels from entering the town if possible, and knew the First Corps would soon be up to support him. The enemy were not aware that there was any considerable force in the vicinity, and in the morning sent forward Heth's division of Hill's corps to occupy the place, anticipating no difficulty in doing so. Buford in the meantime had dismounted a large part of his force, had strengthened his line of skirmishers, and planted his batteries at the most commanding points.
General Reynolds, in consequence of the duties devolving upon him as commander of the Left Wing of the army, that is of the First, Third, and Eleventh Corps, had turned over the command of the First Corps to me. He now made immediate dispositions to go forward to assist Buford.
As my corps was largely engaged in the first day's operations, I must be excused for having a good deal to say in the first person in relation to them. Reynolds sent for me about six o'clock in the morning, read to me the various despatches he had received from Meade and Buford, and told me he should go forward at once with the nearest division—that of Wadsworth—to aid the cavalry. He then instructed me to draw in my pickets, assemble the artillery and the remainder of the corps, and join him as soon as possible. Having given these orders, he rode off at the head of the column, and I never saw him again.
The position of the two armies on the morning of the 1st of July, was as follows: The First Corps at Marsh Creek; the Second and Third Corps at Taneytown; the latter being under orders to march to Emmetsburg, to relieve the Eleventh Corps, which was directed to join the First Corps at Gettysburg; the Twelfth Corps was at Two Taverns; the Fifth Corps at Hanover, and the Sixth Corps about thirty-five miles off to the right at Manchester. Kilpatrick's and Gregg's divisions of cavalry were also at Hanover. The Confederate army was advancing on Gettysburg from the west and north. The concentration of their troops and the dispersion of ours are indicated on the map.
It must be remembered that the enemy had but three corps, while the Union army had seven. Each of their corps represented a third, and each of ours a seventh, of our total force. The same ratio extended to divisions and brigades.