Fearing that all would be killed if he did not stop the machine, the lad threw off the clutch and applied the brakes. Then, in the center of a large force of Germans, who came rushing in upon them, the lad stood up in the machine, and, raising his uninjured hand, shouted: "We surrender!" A German officer called a hoarse command, and the long line of threatening rifles was lowered. "Come out of there," called the officer, "and be quick about it." Hal did as commanded, and a moment later Chester also was on the ground. Turning back to the machine, they tenderly lifted Captain Anderson out and laid him on the ground. He had fainted during the wild ride. Hal turned to the German officer. "Will you please see that my friend," indicating the captain, "receives medical attention at once?" "It shall be done immediately," returned the German officer gravely, and motioned to two of his men to carry the unconscious captain to a nearby hospital tent. Then he turned to Hal and Chester. "Do you know that you have created terrible havoc in our ranks?" he demanded. Hal smiled grimly. "That is what we intended to do," he made reply. "However, we wouldn't have done so had you permitted us to return to our lines in peace." The German officer also smiled faintly. "You are bold lads," he said quietly. "Come, I will take you to General Von Kluck." The lads followed the officer, and presently came before the German commander, the man whose great military genius some days later saved his wing of the army from probable annihilation. Standing beside the German commander was another officer, somewhat younger, recognizing whom, Hal's heart leaped into his throat. This second officer was none other than the man who, some days before, had placed in Hal's hands dispatches for General Von Kluck--papers that, through Hal's bravery, had been turned over to General French, and had thus foiled the coup planned by the Kaiser himself. The German recognized Hal almost immediately, in spite of his British uniform. He stepped forward, and, with a sneering smile, said: "How do you do, Captain Dersam?" General Von Kluck, who had been looking silently at the two lads, turned to the officer. "You know these prisoners?" he questioned. "Well, I know one of them," was the reply. "That is, I thought I did once. It seems that I was mistaken." "Explain yourself." "This," said the German, pointing to Hal, "is the young man to whom I told you I delivered the dispatches intended for you. He represented himself to me as Captain Dersam, of your staff. Later we found Captain Dersam gagged and bound on the banks of the Marne. Therefore, this officer must be a traitor." General Von Kluck rose to his feet excitedly. "So," he exclaimed, "you are the man whom we have to thank for the defeat of our plan, eh?" He turned to the officer. "And you say he was in German uniform?" "Yes, sir." The general turned to Hal. "Do you know what that means?" he asked. Hal nodded his head.