"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.

The whole line of the Invincibles quivered with excitement, and then Harry saw that the rumor was true, or that their commander at least believed it to be so. The firing stopped entirely and the bugles blew the retreat. All the brigades gathered themselves up and, wild with anger and chagrin, slowly withdrew.

"Why are we retreating?" exclaimed Langdon, angrily. "Not a Yankee set his foot on the bridge! We're not whipped!"

"No," said Harry, "we're not whipped, but if we don't retreat we will be. If fifteen or twenty thousand Yankees struck us on the flank while those fellows are still in front everything would go."

These were young troops, who considered a retreat equivalent to a beating, and fierce murmurs ran along the line. But the officers paid no attention, marching them steadily on, while the artillery rumbled by their side. Both to right and left they heard the sound of firing, and they saw the smoke floating against both horizons, but they paid little attention to it. They were wondering what was in store for them.

"Cheer up, you lads!" cried Colonel Talbot. "You'll get all the fighting you can stand, and it won't be long in coming, either."