Happy Tom was right. Lee and Jackson had resolved to give McClellan no rest. They were following him closely and Stuart with the cavalry hung in a cloud on his flanks. They pressed him hard the next day at White Oak Swamp, Jackson again making the circular movement and falling on his flank, while Longstreet attacked in front. There was a terrible battle in thick forest and among deep ravines, but the darkness again saved the Northern army, which escaped, leaving cannon and men in the hands of the enemy. Harry lay that night in a daze rather than sleep. He was feverish and exhausted, yet he gathered some strength from the stupor in which he lay. All that day they marched along the edge of a vast swamp, and they heard continually the roar of a great battle on the horizon, which they were not able to reach. It was Glendale, where Longstreet and one of the Hills fought a sanguinary draw with McClellan. But the Northern commander, knowing that a drawn battle in the enemy's country was equivalent to a defeat, continued his retreat and the Southern army followed, attacking at every step. The roar of artillery resounded continuously through the woods and the vanguard of one army and the rear guard of the other never ceased their rifle fire. Neither Harry nor his young comrades could ever get a clear picture of the vast, confused battle amid the marshes of the Chickahominy, extending over so long a period and known as the Seven Days, but it was obvious to them now that Richmond was no longer in danger. The coming of Jackson had enabled Lee to attack McClellan with such vigor and fierceness that the young Northern general was forced not only to retreat, but to fight against destruction. But the Union mastery of the water, always supreme, was to come once more to the relief of the Northern army. As McClellan made his retreat, sometimes losing and sometimes beating off the enemy, but always leaving Richmond further and further behind, he had in mind his fleet in the James, and then, if pushed to the last extremity, the sea by which they had come. But there were many staunch fighters yet in his ranks, and the Southern leaders were soon to find that they could not trifle with the Northern army even in defeat. He turned at Malvern Hill, a position of great strength, posted well his numerous and powerful artillery, and beat off all the efforts of Lee and Jackson and Longstreet and the two Hills, and Armistead and the others. More than five thousand of the Southern troops fell in the fruitless charges. Then McClellan retreated to the James River and his gunboats and the forces of the North were not to come as near Richmond again for nearly three years.