On the 10th of August Sheridan had advanced on Early up the Shenandoah Valley, Early falling back to Strasburg. On the 12th I learned that Lee had sent twenty pieces of artillery, two divisions of infantry and a considerable cavalry force to strengthen Early. It was important that Sheridan should be informed of this, so I sent the information to Washington by telegraph, and directed a courier to be sent from there to get the message to Sheridan at all hazards, giving him the information. The messenger, an officer of the army, pushed through with great energy and reached Sheridan just in time. The officer went through by way of Snicker's Gap, escorted by some cavalry. He found Sheridan just making his preparations to attack Early in his chosen position. Now, however, he was thrown back on the defensive.

On the 15th of September I started to visit General Sheridan in the Shenandoah Valley. My purpose was to have him attack Early, or drive him out of the valley and destroy that source of supplies for Lee's army. I knew it was impossible for me to get orders through Washington to Sheridan to make a move, because they would be stopped there and such orders as Halleck's caution (and that of the Secretary of War) would suggest would be given instead, and would, no doubt, be contradictory to mine. I therefore, without stopping at Washington, went directly through to Charlestown, some ten miles above Harper's Ferry, and waited there to see General Sheridan, having sent a courier in advance to inform him where to meet me.

When Sheridan arrived I asked him if he had a map showing the positions of his army and that of the enemy. He at once drew one out of his side pocket, showing all roads and streams, and the camps of the two armies. He said that if he had permission he would move so and so (pointing out how) against the Confederates, and that he could "whip them." Before starting I had drawn up a plan of campaign for Sheridan, which I had brought with me; but, seeing that he was so clear and so positive in his views and so confident of success, I said nothing about this and did not take it out of my pocket.

Sheridan's wagon trains were kept at Harper's Ferry, where all of his stores were. By keeping the teams at that place, their forage did not have to be hauled to them. As supplies of ammunition, provisions and rations for the men were wanted, trains would be made up to deliver the stores to the commissaries and quartermasters encamped at Winchester. Knowing that he, in making preparations to move at a given day, would have to bring up wagons trains from Harper's Ferry, I asked him if he could be ready to get off by the following Tuesday. This was on Friday. "O Yes," he said, he "could be off before daylight on Monday." I told him then to make the attack at that time and according to his own plan; and I immediately started to return to the army about Richmond. After visiting Baltimore and Burlington, New Jersey, I arrived at City Point on the 19th.

On the way out to Harper's Ferry I had met Mr. Robert Garrett, President of the Baltimore and Ohio Railroad. He seemed very anxious to know when workmen might be put upon the road again so as to make repairs and put it in shape for running. It was a large piece of property to have standing idle. I told him I could not answer then positively but would try and inform him before a great while. On my return Mr. Garrett met me again with the same and I told him I thought that by the Wednesday he might send his workmen out on his road. I gave him no further information however, and he had no suspicion of how I expected to have the road cleared for his workmen.

Sheridan moved at the time he had fixed upon. He met Early at the crossing of Opequon Creek, a most decisive victory—one which the country. Early had invited this attack himself by his bad generalship and made the victory easy. He had sent G. T. Anderson's division east of the Blue Ridge before I went to Harper's Ferry; and about the time I arrived there he started other divisions (leaving but two in their camps) to march to Martinsburg for the purpose destroying the Baltimore and Ohio Railroad at that point. Early here learned that I had been with Sheridan and, supposing there was some movement on foot, started back as soon as he got the information. But his forces were separated and, as I have said, he was very badly defeated. He fell back to Fisher's Hill, Sheridan following.

The valley is narrow at that point, and Early made another stand there, behind works which extended across. But Sheridan turned both his flanks and again sent him speeding up the valley, following in hot pursuit. The pursuit was continued up the valley to Mount Jackson and New Market. Sheridan captured about eleven hundred prisoners and sixteen guns. The houses which he passed all along the route were found to be filled with Early's wounded, and the country swarmed with his deserters. Finally, on the 25th, Early turned from the valley eastward, leaving Sheridan at Harrisonburg in undisputed possession.

Now one of the main objects of the expedition began to be accomplished. Sheridan went to work with his command, gathering in the crops, cattle, and everything in the upper part of the valley required by our troops; and especially taking what might be of use to the enemy. What he could not take away he destroyed, so that the enemy would not be invited to come back there. I congratulated Sheridan upon his recent great victory and had a salute of a hundred guns fired in honor of it, the guns being aimed at the enemy around Petersburg. I also notified the other commanders throughout the country, who also fired salutes in honor of his victory.

I had reason to believe that the administration was a little afraid to have a decisive battle at that time, for fear it might go against us and have a bad effect on the November elections. The convention which had met and made its nomination of the Democratic candidate for the presidency had declared the war a failure. Treason was talked as boldly in Chicago at that convention as ever been in Charleston. It was a question whether the government would then have had the power to make arrests and punish those who talked treason. But this decisive victory was the most effective campaign argument made in the canvass.

Sheridan, in his pursuit, got beyond where they could hear from him in Washington, and the President became very much frightened about him. He was afraid that the hot pursuit had been a little like that of General Cass was said to have been, in one of our Indian wars, when he was an officer of army. Cass was pursuing the Indians so closely that the first thing he knew he found himself in front, and the Indians pursuing him. The President was afraid that Sheridan had got on the other side of Early and that Early was in behind him. He was afraid that Sheridan was getting so far away that reinforcements would be sent out from Richmond to enable Early to beat him. I replied to the President that I had taken steps to prevent Lee from sending reinforcements to Early, by attacking the former where he was.