The operation now performed by General Lee was intricate, of much delicacy and hazard. It was to move from his position in front of Hooker without exposing any part of his forces, or Richmond, to be attacked in detail, and this important part of the grand maneuver was left to Longstreet and his corps, with the cavalry in communication.

The corps of Ewell (formerly Jackson's) and A. P. Hill were sent ahead by easy marches, keeping a certain distant touch with Longstreet. The mountain gaps were filled with Stuart's cavalry and the enemy held in close observation. All went well. Hooker made no attempt to follow. Lee moved toward Washington leisurely, as if to meet him there later.

Stuart's part with his cavalry was now most important. It is contended by some that Lee left it finally optional for him to decide upon his movements. Whether to follow the army by crossing the river in the west of the ridge or by one of the lower fords. In the latter event it was, as it proved, to lose Lee and leave him without his strong arm in an enemy's country. It has been attempted to show also that the order by which Stuart moved came from Longstreet. But this must be dismissed; positive information to the contrary being at hand. Surprising to say, it now appears that Stuart left the army with his fine command and started on his too fascinating raid, not only by his own preference, but actually in violation of Lee's orders, which failed to reach him. All doubt had passed from Lee's mind and he had ordered Stuart to keep with him. The latter was raiding, and Lee's campaign was lost.

Major McClellan, Stuart's A. A. G. and chief of staff, in his history of that cavalry (an excellent work) declares that in his opinion the absence of Stuart was the cause of Lee's trouble; and for myself I have never doubted it. It is not to be supposed that no cavalry whatever was left with the army. Stuart's defenders have taken pains to point that out. There was a squadron or two, here and there, a regiment at one place, and a brigade under an efficient commander left in the rear. But these separate little commands amounted to nothing. It was the great body of that splendid horse under their leader Stuart that Lee wanted. He was the eyes and ears and strong right arm of the commander, and well may he have missed him. All through the marches he showed it.

Stuart was on a useless, showy parade almost under the guns of the Washington forts, and his horse, laurel-wreathed, bore the gay rider on amid songs and stories. He had some opposition, of course, and had a share of fighting in Ashby's Gap and the plain on the east.

When he rejoined Lee it was with exhausted horses and half worn-out men in the closing hours of Gettysburg.

Had he been with Lee where would our commander have made his battle? Possibly, not on that unfavorable ground of Gettysburg. Lee with his personally weak opponent, and Stuart by him, could almost have chosen the spot where he would be sure to defeat the Union Army.

This, however, somewhat anticipates; going back we find our three corps with their military pushed across the river with energy. The Second (Ewell's), the Third (A. P. Hill's), and Longstreet last. All infantry and artillery across, leaving only about a brigade of cavalry on the south side. The enemy for some days had quite disappeared from our observations. The march proceeded through Maryland and Pennsylvania in good form, General Lee's orders against depredations being most peremptory. At Chambersburg a halt was made over Sunday and our corps had the place well guarded and protected from plunder by loose bodies of men. Our chief commissary, Moses, made a forced requisition and got some supplies and necessaries, not very much.

At night I was roused by a detail of the provost guard bringing up a suspicious prisoner. I knew him instantly; it was Harrison, the scout, filthy and ragged, showing some rough work and exposure. He had come to "Report to the General, who was sure to be with the army," and truly his report was long and valuable. I should here say that in every respect it was afterwards fully confirmed by events and facts. Harrison gave us the first complete account of the operations of the enemy since Hooker left our front. He brought his report down to a day or two, and described how they were even then marching in great numbers in the direction of Gettysburg, with intention apparently of concentrating there. He also informed us of the removal of Hooker and the appointment of George Meade to command of the Army of the Potomac. How many commanders had Lee made for that army! Harrison's report was so exceedingly important that I took him at once with me, and woke Longstreet. He was immediately on fire at such news and sent the scout by a staff officer to General Lee's camp near by. The General heard him with great composure and minuteness. It was on this, the report of a single scout, in the absence of cavalry, that the army moved. Important as was the change, the commanding General was not long in deciding. He sent orders to bring Ewell immediately back from the North about Harrisburg, and join his left. Then he started A. P. Hill off at sunrise for Gettysburg, followed by Longstreet. The enemy was there, and there our General would strike him.

The march was much impeded by too many troops and trains on one road and Ewell's men breaking in on the route next day to get to their position.