The Rebel General, Pemberton, with 25,000 men and 10 batteries, now sallied out from Vicksburg to attack Grant, and the latter accordingly called back all of his corps to assail Pemberton's position near Edward's Depot. Sherman made a forced march of 20 miles, and that night, arriving at Bolton, was ordered to move on Bridgeport to the right. The enemy beaten, turned back to Vicksburg. At Bridgeport Sherman was joined by Blair with his division, and they crossed the Big Black River. Pressing steadily forward, by the morning of May 18th, Sherman was on the Benton Road, commanding the Yazoo, thus putting himself between the enemy at Vicksburg and the forts on the Yazoo. Grant soon came up and placed the whole army in line of battle, Sherman being on the right. When the advance was ordered, Sherman marched on the Haines's Bluff Road, capturing the enemy's works and camp, and taking many prisoners. On the morning of May 19th the army encompassed the enemy north of Vicksburg, Sherman's command resting on the river, within view of the fleet, with Vicksburg itself in plain sight. There was nothing between Sherman and the Rebel army but about four hundred yards of ground, much cut up by almost impassable ravines and intrenchments. Sherman quickly sent a regiment to secure possession of Haines's Bluff, which was done. Communication was thus opened with the fleet, and bridges and roads were constructed, over which to bring up stores from the mouth of the Chickasaw Bayou, where the supply boats were lying. From May 11th to May 18th Sherman's men had literally lived upon the country. Vicksburg was now as completely invested as was possible with the forces at hand, and the enemy was considerably demoralized. Grant accordingly ordered a general assult at 2 P. M. on May 19th. The attack was made by Sherman's men with great vigor. The ground was very difficult and the enemy's works strong, and at nightfall Sherman had to order his men to fall back a short distance to shelter. The next two days were spent in placing artillery and bringing up supplies to the troops, and on the morning of May 22d another general assult was made all along the line. No men were visible in the hostile works except a few sharpshooters, who were kept pretty quiet by the Union skirmishers. A volunteer storming party led Sherman's column. As they neared the works they had to cross a bit of open ground in full view of the enemy. This they did at double-quick, and reached the salient of the bastion. As they approached the sally-port they were met with by a withering fire. The front ranks wavered. The rear pressed on valiantly, but it was impossible to face the storm of lead and iron, and they had to seek cover. But the head of the column scaled the outer slope of the left face of the bastion, planted their colors, and then literally burrowed into the earth to gain shelter from the flank fire.