At last they began to advance across the grassy meadow. When one man fell under the fire of the Guardsmen, another rushed into his place. Three times the indomitable Graustarkians drove them back, and as often did Marlanx drag them up again, exalted by the example he set.

"'Gad, he is a soldier," cried Truxton, who had wasted a half dozen shots in the effort to bring him down. "Hello! There's my friend Brutus. He's no coward, either. Here's a try for you, Brutus."

He dropped to his knee and took deliberate aim at the frenzied henchman. The discovery that there were three bullets in Brutus's breast when he was picked up long afterward did not affect the young man's contention that his was the one that had found the heart.

The fall of Brutus urged the Iron Count to greater fury. His horse had been shot from under him. He was on his feet, a gaunt demon, his back to the enemy, calling to his men to follow him as he moved toward the stubborn row of green and red. Bullets hissed about his ears, but he gave no heed to them. More than one man in the opposing force watched him as if fascinated. He seemed to be absolutely bullet-proof. There were times when he stumbled and almost fell over the bodies of his own men lying in the path.

By this time his entire force was inside the grounds. Colonel Quinnox was quick to see the spreading movement on the extreme right and left. Marlanx's captains were trained warriors. They were bent on flanking the enemy. The commander of the Guard gave the command to fall back slowly toward the Castle.

Firing at every step, they crossed the parade ground and then made a quick dash for the shelter of the long balconies. They held this position for nearly an hour, resisting each succeeding charge of the now devilish foe. Time and again the foremost of the attacking party reached the terrace, only to wither under the deadly fire from behind the balustrades. Marlanx, down in the parade ground, was fairly pushing his men into the jaws of death. There was no question as to the courage of the men he commanded. These were not the ruffians from all over the world. They were the reckless, devil-may-care mountaineers and robbers from the hills of Graustark itself.

Truxton King's chance to pay his debt to Vos Engo came after one of the fiercest, most determined charges. The young Count, who had transferred his charges from the old tower to the strong north wing of the Castle, had been fighting desperately in the front rank for some time. His weakness seemed to have disappeared entirely. As the foe fell back in the face of the desperate resistance, Vos Engo sprang down the steps and rushed after them, calling others to join him in the attempt to complete the rout. Near the edge of the terrace he stopped. His leg gave way under him and he fell to the ground. Truxton saw him fall.

He leaped over the low balustrade, dropping his hot rifle, and dashed across the terrace to his rival's assistance. A hundred men shot at him. Vos Engo was trying to get to his feet, his hand upon his thigh; he was groaning with pain.

"It's my turn," shouted the American. "I'll square it up if I can. Then we're even!"

He seized the wounded man in his strong arms, threw him over his shoulder and staggered toward the steps.