General Burnside, with the ninth corps, was, at the time the Army of the Potomac moved, left with the bulk of his corps at the crossing of the Rappahannock River and Alexandria Railroad, holding the road back to Bull Run, with instructions not to move until he received notice that a crossing of the Rapidan was secured, but to move promptly as soon as such notice was received. This crossing he was apprised of on the afternoon of the 4th. By six o'clock of the morning of the 6th he was leading his corps into action near the Wilderness Tavern, some of his troops having marched a distance of over thirty miles, crossing both the Rappahannock and Rapidan rivers. Considering that a large proportion, probably two-thirds of his command, was composed of new troops, unaccustomed to marches, and carrying the accoutrements of a soldier, this was a remarkable march.

The battle of the Wilderness was renewed by us at five o'clock on the morning of the 6th, and continued with unabated fury until darkness set in, each army holding substantially the same position that they had on the evening of the 5th. After dark, the enemy made a feeble attempt to turn our right flank, capturing several hundred prisoners and creating considerable confusion. But the promptness of General Sedgwick, who was personally present and commanded that part of our line, soon reformed it and restored order. On the morning of the 7th, reconnoissances showed that the enemy had fallen behind his intrenched lines, with pickets to the front, covering a part of the battle-field. From this it was evident to my mind that the two days' fighting had satisfied him of his inability to further maintain the contest in the open field, notwithstanding his advantage of position, and that he would wait an attack behind his works. I therefore determined to push on and put my whole force between him and Richmond; and orders were at once issued for a movement by his right flank. On the night of the 7th, the march was commenced towards Spottsylvania Court House, the fifth corps moving on the most direct road. But the enemy having become apprised of our movement, and having the shorter line, was enabled to reach there first. On the 8th, General Warren met a force of the enemy, which had been sent out to oppose and delay his advance, to gain time to fortify the line taken up at Spottsylvania. This force was steadily driven back on the main force, within the recently constructed works, after considerable fighting, resulting in severe loss to both sides. On the morning of the 9th, General Sheridan started on a raid against the enemy's lines of communication with Richmond. The 9th, 10th, and 11th were spent in manoeuvring and fighting, without decisive results. Among the killed on the 9th was that able and distinguished soldier Major-General John Sedgwick, commanding the sixth army corps. Major-General H. G. Wright succeeded him in command. Early on the morning of the 12th a general attack was made on the enemy in position. The second corps, Major-General Hancock commanding, carried a salient of his line, capturing most of Johnson's division of Ewell's corps and twenty pieces of artillery. But the resistance was so obstinate that the advantage gained did not prove decisive. The 13th, 14th, 15th, 16th, 17th, and 18th, were consumed in manoeuvring and awaiting the arrival of reinforcements from Washington. Deeming it impracticable to make any further attack upon the enemy at Spottsylvania Court House, orders were issued on the 15th with a view to a movement to the North Anna, to commence at twelve o'clock on the night of the 19th. Late in the afternoon of the 19th, Ewell's corps came out of its works on our extreme right flank; but the attack was promptly repulsed, with heavy loss. This delayed the movement to the North Anna until the night of the 21st, when it was commenced. But the enemy again, having the shorter line, and being in possession of the main roads, was enabled to reach the North Anna in advance of us, and took position behind it. The fifth corps reached the North Anna on the afternoon of the 23d, closely followed by the sixth corps. The second and ninth corps got up about the same time, the second holding the railroad bridge, and the ninth lying between that and Jericho Ford. General Warren effected a crossing the same afternoon, and got a position without much opposition. Soon after getting into position he was violently attacked, but repulsed the enemy with great slaughter. On the 25th, General Sheridan rejoined the Army of the Potomac from the raid on which he started from Spottsylvania, having destroyed the depots at Beaver Dam and Ashland stations, four trains of cars, large supplies of rations, and many miles of railroad-track; recaptured about four hundred of our men on their way to Richmond as prisoners of war; met and defeated the enemy's cavalry at Yellow Tavern; carried the first line of works around Richmond (but finding the second line too strong to be carried by assault), recrossed to the north bank of the Chickahominy at Meadow Bridge under heavy fire, and moved by a detour to Haxall's Landing, on the James River, where he communicated with General Butler. This raid had the effect of drawing off the whole of the enemy's cavalry force, making it comparatively easy to guard our trains.

General Butler moved his main force up the James River, in pursuance of instructions, on the 4th of May, General Gillmore having joined him with the tenth corps. At the same time he sent a force of one thousand eight hundred cavalry, by way of West Point, to form a junction with him wherever he might get a foothold, and a force of three thousand cavalry, under General Kautz, from Suffolk, to operate against the road south of Petersburg and Richmond. On the 5th, he occupied, without opposition, both City Point and Bermuda Hundred, his movement being a complete surprise. On the 6th, he was in position with his main army, and commenced intrenching. On the 7th he made a reconnoissance against the Petersburg and Richmond Railroad, destroying a portion of it after some fighting. On the 9th he telegraphed as follows:

"HEADQUARTERS, NEAR BERMUDA LANDING,
May 9, 1864.

"HON. E. M. STANTON, Secretary of War.

"Our operations may be summed up in a few words. With one thousand seven hundred cavalry we have advanced up the Peninsula, forced the Chickahominy, and have safely, brought them to their present position. These were colored cavalry, and are now holding our advance pickets towards Richmond.

"General Kautz, with three thousand cavalry from Suffolk, on the same day with our movement up James River, forced the Black Water, burned the railroad bridge at Stony Creek, below Petersburg, cutting into Beauregard's force at that point.

"We have landed here, intrenched ourselves, destroyed many miles of railroad, and got a position which, with proper supplies, we can hold out against the whole of Lee's army. I have ordered up the supplies.

"Beauregard, with a large portion of his force, was left south by the cutting of the railroads by Kautz. That portion which reached Petersburg under Hill I have whipped to-day, killing and wounding many, and taking many prisoners, after a severe and well-contested fight.

"General Grant will not be troubled with any further reinforcements to Lee from Beauregard's force.

"BENJ. F. BUTLER, Major-General."

On the evening of the 13th and morning of the 14th he carried a portion of the enemy's first line of defences at Drury's Bluff, or Fort Darling, with small loss. The time thus consumed from the 6th lost to us the benefit of the surprise and capture of Richmond and Petersburg, enabling, as it did, Beauregard to collect his loose forces in North and South Carolina, and bring them to the defence of those places. On the 16th, the enemy attacked General Butler in his position in front of Drury's Bluff. He was forced back, or drew back, into his intrenchments between the forks of the James and Appomattox rivers, the enemy intrenching strongly in his front, thus covering his railroads, the city, and all that was valuable to him. His army, therefore, though in a position of great security, was as completely shut off from further operations directly against Richmond as if it had been in a bottle strongly corked. It required but a comparatively small force of the enemy to hold it there.

On the 12th, General Kautz, with his cavalry, was started on a raid against the Danville Railroad, which he struck at Coalfield, Powhatan, and Chula Stations, destroying them, the railroad-track, two freight trains, and one locomotive, together with large quantities of commissary and other stores; thence, crossing to the South Side Road, struck it at Wilson's, Wellsville, and Black's and White's Stations, destroying the road and station-houses; thence he proceeded to City Point, which he reached on the 18th.

On the 19th of April, and prior to the movement of General Butler, the enemy, with a land force under General Hoke and an iron-clad ram, attacked Plymouth, N. C., commanded by General H. W. Wessells, and our gunboats there, and, after severe fighting, the place was carried by assault, and the entire garrison and armament captured. The gunboat Smithfield was sunk, and the Miami disabled.

The army sent to operate against Richmond having hermetically sealed itself up at Bermuda Hundred, the enemy was enabled to bring the most, if not all, the reinforcements brought from the south by Beauregard against the Army of the Potomac. In addition to this reinforcement, a very considerable one, probably not less than fifteen thousand men, was obtained by calling in the scattered troops under Breckinridge from the western part of Virginia.

The position of Bermuda Hundred was as easy to defend as it was difficult to operate from against the enemy. I determined, therefore, to bring from it all available forces, leaving enough only to secure what had been gained; and accordingly, on the 22d, I directed that they be sent forward, under command of Major-General W. F. Smith, to join the Army of the Potomac.

On the 24th of May, the 9th army corps, commanded by Major-General A. E. Burnside, was assigned to the Army of the Potomac, and from this time forward constituted a portion of Major-General Meade's command.