Then disaster followed disaster in that part of the field; but as I said in the beginning, I am not writing a history of the war, and hence will not attempt to follow the movements of the Western armies.
The question is often asked, "Why did Gen. Lee take his army into Pennsylvania?" That question is easily answered.
For the same reason that the children of Israel went down into Egypt. There was a famine in the land, and they went there for corn. Food was growing scarcer and scarcer in the South, and it became a serious question not only as to how the army was to be fed, but also the citizens at home, the old men, women and children.
No supplies could be brought from beyond the Mississippi. Tennessee and Kentucky were in the hands of the enemy, a great portion of Virginia; in fact, the richest farming sections were ravished first by one army, then by the other, making it impossible for the farmers to put in their grain or reap their harvests.
The other States of the South grew mostly cotton and tobacco. All the Southern ports were closely blockaded; hence the problem of sustaining human life was growing more serious every day.
If Gen. Lee had been successful at the battle of Gettysburg his army would have remained north of the Potomac until late in the fall, and would have subsisted upon the country surrounding his camps. At the same time, the farmers on the eastern side of the Blue Ridge and in the rich valley of Virginia could have planted and reaped an abundant harvest, which would have sufficed to have taken care of man and beast during the long winter months; but Providence ruled otherwise, and Lee was compelled to move his army back and provide for it as best he could.
Another question has been as often asked. "Why was Lee not successful at Gettysburg?" Gen. Lee seemed to have anticipated this question, and answered it in language almost divine when he said, "It was all my fault." He hoped this would have quieted criticism, but it did not, and for forty-odd years critics have been trying to fix the blame on someone.
Of course, I cannot solve the problem, but I would suggest this: Gen. Lee could not take the risk at Gettysburg that he took when he fought his other battles. He was too far from his base of supplies. If he had been defeated at Seven Pines, Manassas, Antietam, Fredericksburg, Chancellorsville, the Wilderness, Spotsylvania, Cold Harbor, he would have had the defences of Richmond to fall back upon. But not so at Gettysburg. If he should be defeated there he must retain an army strong enough to cut through the lines of the enemy, in order to reach his base of supplies.
After three days' fighting at Gettysburg he had gone as far as he dared go toward the depletion of his men and supplies; hence he ordered a retreat, knowing that he was still strong enough to handle the enemy and reach the south bank of the Potomac.
Some say it was because Jackson was not there; but the battles of the Wilderness, Spotsylvania and Cold Harbor, where Grant was in command of the Northern army, demonstrated that Lee could win victories without Jackson. Perhaps what contributed most to Lee's defeat at Gettysburg was the absence of the cavalry just at a time when he needed it most. Had Stuart kept the cavalry between the two armies, and informed Lee as to the movements of the enemy, he would not have been placed in such a disadvantageous position as he was at Gettysburg. Then again, the enemy had vastly superior numbers.