It seemed to Harry that the points of the bayonets were almost in his face, and then, at the shouted command, the whole earthwork burst into a blaze. The cannon and hundreds of rifles sent their deadly volleys into the blue masses at short range. The fort had turned into a volcano, pouring forth a rain of fire and deadly missiles. The front line of the Northern force was shot away, but the next line took its place and rushed at the fort with those behind pressing close after them. The defenders loaded and fired as fast as they could and the high walls of earth helped them. The loose dirt gave away as the Northern men attempted to climb them, and dirt and men fell together back to the bottom. The Northern gunners in the rear of the attack could not fire for fear of hitting their own troops, but the Southern cannon at the embrasures had a clear target. Shot and shell crashed into the Northern ranks, and the deadly hail of bullets beat upon them without ceasing.
But still they came.
"The mechanics and mill hands are as good as anybody, it appears!"shouted St. Clair in Harry's ear, and Harry nodded.
But the defenses of the fort were too strong. The charge, driven home with reckless courage, beat in vain upon those high earthen walls, behind which the defenders, standing upon narrow platforms, sent showers of bullets into ranks so close that few could miss. The assailants broke at last and once more the shrill notes of the brazen bugle pierced the air. But instead of saying come, it said: "Fall back! Fall back!"and the great clouds of smoke that had protected the Northern advance now covered the Northern retreat.
The firing had been so rapid and so heavy that the whole field in front of the fort was covered with smoke, through which they caught only the gleam of bayonets and glimpses of battle flags. But they knew that the Northern troops were retiring, carrying with them their wounded, but leaving the dead behind. Harry, excited and eager, was about to leap upon the crest of the earthwork, but Colonel Talbot sharply ordered him down.
"You'd be killed inside of a minute!" he cried. "Carrington is out there with the guns! As soon as their troops are far enough back he'll open on us with the cannon, and he'll rake this fort like a hurricane beating upon a forest. Only the earthworks will protect us from certain destruction."He sent the order, fierce and sharp, along the line, for every one to keep under cover, and there was ample proof soon that he knew his man.
The Northern infantry had retired and the smoke in front was beginning to lift, when the figure of a tall man in blue appeared on a hillock at the edge of the forest. Harry, who had snatched up a rifle, levelled it instantly and took aim. But before his finger could pull the trigger Colonel Talbot knocked it down again.
"My God!" he exclaimed. "I was barely in time to save him! It was Carrington himself!""But he is our enemy! Our powerful enemy!"
"Our enemy! Our official enemy, yes! But my friend! My life-long friend! We were boys together at West Point! We slept under the same blanket on the icy plateaux of Mexico. No, Harry, I could not let you or any other slay him!"The figure disappeared from the hillock and the next moment the great guns opened again from the forest. The orders of Colonel Talbot had not been given a moment too soon. Huge shells and balls raked the fort once more and the defenders crouched lower than ever in the trenches.
Harry surmised that the new cannonade was intended mainly to prevent a possible return attack by the Southern troops, but they were too cautious to venture from their earthworks. The Invincibles had grown many years older in a few hours.
When it became evident that no sally would be made from the fort, the fire of the cannon in front ceased, and the smoke lifted, disclosing a field black with the slain. Harry looked, shuddered and refused to look again. But Colonel Talbot examined field and forest long and anxiously through his glasses.
"They are there yet, and they will remain," he announced at last.
"We have beaten back the assault. They may hold us here until a great army comes, and with heavy loss to them, but we are yet besieged.
Carrington will not let us rest. He will send a shell to some part of this fort every three or four minutes. You will see."They heard a roar and hiss a minute later, and a shell burst inside the walls. Through all the afternoon Carrington played upon the shaken nerves of the Invincibles. It seemed that he could make his shells hit wherever he wished. If a recruit left a trench it was only to make a rush for another. If their nerves settled down for a moment, that solemn boom from the forest and the shriek of the shell made them jump again.
"Wonderful! Wonderful!" murmured Colonel Talbot, "but terribly trying to new men! Carrington certainly grows better with the years."Harry tried to compose himself and rest, as he lay in the trench with St. Clair and Langdon. They had had their battle face to face and all three of them were terribly shaken, but they recovered themselves at last, despite the shells which burst at short but irregular intervals inside the fort. Thus the last hours of the afternoon waned, and as the twilight came, they went more freely about the fort.
Colonel Talbot called a conference of the senior officers in a corner of the enclosure well under the shelter of the earthen walls, and after some minutes of anxious talking they sent for the three youths. Harry, St. Clair and Langdon responded with alacrity, sure that something of the utmost importance was afoot.
