The Southern batteries replied with all their might and the riflemen supported them, sending the bullets in sheets across Bull Run. The battle flamed in fifteen minutes into extraordinary violence. Harry had never before heard such a continuous and terrific thunder. It seemed that the drums of his ears would be smashed in, but over his head he heard the continuous hissing and whirring of steel and lead. The Northern riflemen were at work, too, and it was fortunate for the Invincibles that they were able to lie down, as they poured their fire into the bushes and woods on the opposite bank. The volume of smoke was so great that they could no longer see the position of the enemy, but Harry believed that so much metal must do great damage. Although he was a lieutenant he had snatched up a rifle dropped by some fallen soldier, and he loaded and fired it so often that the barrel grew hot to his hand. Lying so near the river, most of the hostile fire went over the heads of the Invincibles, but now and then a shell or a cluster of bullets struck among them, and Harry heard groans. But he quickly forgot these sounds as he watched the clouds of smoke and the blaze of fire on the other side of Bull Run. "They are not trying to force the passage of the bridge! Everything is for the best!" shouted Langdon. "No, they dare not," shouted St. Clair in reply. "No column could live on that bridge in face of our fire." It seemed strange to Harry that the Northern troops made no attempt to cross. Why did all this tremendous fire go on so long, and yet not a foe set foot upon the bridge? It seemed to him that it had endured for hours. The sun was rising higher and higher and the day was growing hotter and hotter. It lay with the North to make the first movement to cross Bull Run, and yet no attempt was made. Colonel Talbot came repeatedly along the line of the Invincibles, and Harry saw that he was growing uneasy. Such a great volume of fire, without any effort to take advantage of it, made the veteran suspicious. He knew that those old comrades of his on the other side of Bull Run would not waste their metal in a mere cannonade and long range rifle fire. There must be something behind it. Presently, with the consent of the commander, he drew the Invincibles back from the river, where they were permitted to cease firing, and to rest for a while on their arms. But as they drew long breaths and tried to clear the smoke from their throats, a rumor ran down the lines. The attack at the bridge was but a feint. Only a minor portion of the hostile army was there. The greater mass had gone on and had already crossed the river in face of the weak left flank of the Southern army. Beauregard had been outwitted. The Yankees were now in great force on his own side of Bull Run, and it would be a pitched battle, face to face.