There was more justification for the assault at Vicksburg. We were in a Southern climate, at the beginning of the hot season. The Army of the Tennessee had won five successive victories over the garrison of Vicksburg in the three preceding weeks. They had driven a portion of that army from Port Gibson with considerable loss, after having flanked them out of their stronghold at Grand Gulf. They had attacked another portion of the same army at Raymond, more than fifty miles farther in the interior of the State, and driven them back into Jackson with great loss in killed, wounded, captured and missing, besides loss of large and small arms: they had captured the capital of the State of Mississippi, with a large amount of materials of war and manufactures. Only a few days before, they had beaten the enemy then penned up in the town first at Champion's Hill, next at Big Black River Bridge, inflicting upon him a loss of fifteen thousand or more men (including those cut off from returning) besides large losses in arms and ammunition. The Army of the Tennessee had come to believe that they could beat their antagonist under any circumstances. There was no telling how long a regular siege might last. As I have stated, it was the beginning of the hot season in a Southern climate. There was no telling what the casualties might be among Northern troops working and living in trenches, drinking surface water filtered through rich vegetation, under a tropical sun. If Vicksburg could have been carried in May, it would not only have saved the army the risk it ran of a greater danger than from the bullets of the enemy, but it would have given us a splendid army, well equipped and officered, to operate elsewhere with. These are reasons justifying the assault. The only benefit we gained—and it was a slight one for so great a sacrifice—was that the men worked cheerfully in the trenches after that, being satisfied with digging the enemy out. Had the assault not been made, I have no doubt that the majority of those engaged in the siege of Vicksburg would have believed that had we assaulted it would have proven successful, and would have saved life, health and comfort.

CHAPTER LVI.

LEFT FLANK MOVEMENT ACROSS THE CHICKAHOMINY AND JAMES—GENERAL LEE —VISIT TO BUTLER—THE MOVEMENT ON PETERSBURG—THE INVESTMENT OF PETERSBURG.

Lee's position was now so near Richmond, and the intervening swamps of the Chickahominy so great an obstacle to the movement of troops in the face of an enemy, that I determined to make my next left flank move carry the Army of the Potomac south of the James River. (*34) Preparations for this were promptly commenced. The move was a hazardous one to make: the Chickahominy River, with its marshy and heavily timbered approaches, had to be crossed; all the bridges over it east of Lee were destroyed; the enemy had a shorter line and better roads to travel on to confront me in crossing; more than fifty miles intervened between me and Butler, by the roads I should have to travel, with both the James and the Chickahominy unbridged to cross; and last, the Army of the Potomac had to be got out of a position but a few hundred yards from the enemy at the widest place. Lee, if he did not choose to follow me, might, with his shorter distance to travel and his bridges over the Chickahominy and the James, move rapidly on Butler and crush him before the army with me could come to his relief. Then too he might spare troops enough to send against Hunter who was approaching Lynchburg, living upon the country he passed through, and without ammunition further than what he carried with him.

But the move had to be made, and I relied upon Lee's not seeing my danger as I saw it. Besides we had armies on both sides of the James River and not far from the Confederate capital. I knew that its safety would be a matter of the first consideration with the executive, legislative and judicial branches of the so-called Confederate government, if it was not with the military commanders. But I took all the precaution I knew of to guard against all dangers.

Sheridan was sent with two divisions, to communicate with Hunter and to break up the Virginia Central Railroad and the James River Canal, on the 7th of June, taking instructions to Hunter to come back with him (*35). Hunter was also informed by way of Washington and the Valley that Sheridan was on the way to meet him. The canal and Central Road, and the regions penetrated by them, were of vast importance to the enemy, furnishing and carrying a large per cent. of all the supplies for the Army of Northern Virginia and the people of Richmond. Before Sheridan got off on the 7th news was received from Hunter reporting his advance to Staunton and successful engagement with the enemy near that place on the 5th, in which the Confederate commander, W. S. Jones, was killed. On the 4th of June the enemy having withdrawn his left corps, Burnside on our right was moved up between Warren and Smith. On the 5th Birney returned to Hancock, which extended his left now to the Chickahominy, and Warren was withdrawn to Cold Harbor. Wright was directed to send two divisions to the left to extend down the banks of that stream to Bottom's Bridge. The cavalry extended still farther east to Jones's Bridge.

On the 7th Abercrombie—who was in command at White House, and who had been in command at our base of supplies in all the changes made from the start—was ordered to take up the iron from the York River Railroad and put it on boats, and to be in readiness to move by water to City Point.

On the 8th Meade was directed to fortify a line down the bank overlooking the Chickahominy, under cover of which the army could move.

On the 9th Abercrombie was directed to send all organized troops arriving at White House, without debarking from their transports, to report to Butler. Halleck was at this time instructed to send all reinforcements to City Point.

On the 11th I wrote: