From the window of the cabin there came a sharp crack. A bullet zipped by Frank's ear, but the lad did not flinch. He moved his position and saw the German prisoners marched to the rear.

"Now," he said, "we'll have to get those fellows inside. First, however, we'll give them a chance."

He raised his voice in a shout.

"What do you want?" came the response from the cabin.

"You are outnumbered ten to one," said Frank. "Come out and surrender. We don't want to kill you."

"Come and take us," was the sneering response.

"Don't be fools," called Frank. "We're sure to get you."

"Well, I'll get you first," came a sharp cry.

Frank stepped back and none too quickly, for a bullet passed through the space where his head had been a moment before.

"If you must have it, all right," the lad muttered. He turned to his men. "I want ten volunteers to go with me," he said quietly.