Harry had nothing to do but to keep near his general, in case he was wanted. But he watched everything with the utmost interest. Once he looked back and saw the Invincibles, few in number, but still preserving their regiment, marching in brave style along the plank road. Colonel Talbot and Lieutenant-Colonel St. Hilaire were riding side by side at its head, and in all the army there were not two more erect and soldierly figures than theirs. They soon heard heavy artillery discharges from the other force on the pike, and the fire in front of them increased heavily. Nevertheless both forces pushed resolutely onward. Harry had no idea what it all meant. The movements of Hooker were a mystery to him, but he felt the presence of an enveloping danger, through which, however, he felt sure that the sword of Jackson could slash. He saw that the generals were neglecting no precautions. The scouts and hardy riflemen were now pressing through all the forests and thickets, like Indians trailing in the Wilderness. They kept the two forces, the one on the plank road and the other on the pike, in touch. McLaws, who had shown so much spirit and judgment at Antietam, led on the pike. Now the fighting increased on both roads. Batteries faced batteries and cavalry charged. But Harry felt all the time that these were not supreme efforts. The opposing force seemed to be merely a curtain before Hooker, and as the Southern army advanced the curtain was drawn steadily back, but it was always there. One of the encounters rose almost to the dignity of a battle. A heavy division of Northern regulars drove in all the Southern skirmishers, but Jackson, sending forward a strong force, pushed back the regulars in their turn. Harry watched the fighting most of the time, but at other times he watched his general's face. It was the usual impenetrable mask, but late in the afternoon Harry saw a sudden sparkle in the blue eye. He always believed that at that moment the general divined the enemy's intentions, but the boy never had any way of knowing. Scouts came in presently and reported that another heavy column was marching from the Rappahannock to join Hooker in the Wilderness, and now the advance of the Southern force became slower. It was obvious to Harry that Jackson, while resolute to follow Hooker, intended to guard against all possibility of ambush. Harry knew nothing then of the Chancellor House, but Dalton told him. "It's a big place," he said, "standing on a heavy ridge surrounded by thick timber, and it's a natural presumption that Hooker will stop there. From the timbered ridge his cannon can sweep every approach."