The skeleton work of the trestle now rose more clearly into view. The rain had almost ceased and faint rays of moonlight showed through the rifts where the clouds had broken apart. The boys distinctly heard the gurgling rush of waters, and they also saw the clear, bluish surface of the mountain stream. The same quickening of light disclosed the Southern force on their right flank and rear, only four or five hundred yards away. Dick's hasty glance backward lingered for a moment on a powerful man on a white horse just in advance of the Southern column. He saw this man raise his hand and then command the men to fire. He and twenty others under the impulse of excitement shouted to the regiment to drop down, and the Northern lads did so.

Most of the volley passed over their heads. Rising they sent back a return discharge, and then the head of the columns rushed into the stream. Dick felt swift water whirling about him and tugging at his body, but it rose no higher than his waist, although foam and spray were dashed into his face. He heard all around him the splashing of his comrades, and their murmurs of satisfaction. They realized now that they were not only able to retreat before a much superior force, but this same stream, when crossed, would form a barrier behind which they could fight two to one.

The Confederate leader, whoever he might be, and Dick had no doubt that he was the redoubtable Turner Ashby, also appreciated the full facts and he drove his whole force straight at the regiment. It was well for the young troops that part of them were already across, and, under the skillful leadership of Colonel Newcomb, Major Hertford, and three or four old, regular army sergeants, of whom the best was Whitley, were already forming in line of battle.

“Kneel,” shouted the colonel, “and fire over the heads of your comrades at the enemy!”

The light was still growing brighter. The rain came only in slight flurries. The clouds were trooping off toward the northeast, and the moon was out. Dick clearly saw the black mass of the Southern horsemen wheeling down upon them. At least three hundred of the regiment were now upon the bank, and, with fairly steady aim, they poured a heavy volley into the massed ranks of their foe. Dick saw horses fall while others dashed away riderless. But the Southern line wavered only for a moment and then came on again with many shouts. There were also dismounted men on either flank who knelt and maintained a heavy fire upon the defenders.

The lads in blue were suffering many wounds, but a line of trees and underbrush on the western shore helped them. Lying there partly protected they loaded and pulled trigger as fast as they could, while the rest of their comrades emerged dripping from the stream to join them. The Confederates, brave as they were, had no choice but to give ground against such strong defense, and the miner colonel, despite his reserve and his middle years, gave vent to his exultation.

“We can hold this line forever!” he exclaimed to his aides. “It's one thing to charge us in the open, but it's quite another to get at us across a deep and rushing stream. Major Hertford, take part of the men to the other side of the railroad track and drive back any attempt at a crossing there. Lieutenant Mason, you and Lieutenant Warner go ahead and see what has become of the train. You can get back here in plenty time for more fighting.”

Dick and Warner hurried forward, following the line of the railroad. Their blood was up and they did not like to leave the defense of the river, but orders must be obeyed. As they ran down the railroad track a man came forward swinging a lantern, and they saw the tall gaunt figure of Canby, the chief engineer. Behind him the train stretched away in the darkness.

“I guess that our men have forded the river and are holding the bank,” said Canby. “Do they need the train crew back there to help?”

He spoke with husky eagerness. Dick knew that he was longing to be in the middle of the fight, but that his duty kept him with the train.