The captain withdrew and the colonel's orderly entered, and stood at attention. The four Canadian members of the tank's crew were ordered to the rear, but for the night they would be kept in the lines behind the trenches.

"You are brave young men," said the colonel to Hal. "I watched you advance into our army single-handed. At the same time, it was a fool's trick—or a youngster's."

"We're not so brave as you would think, sir," said Hal with a slight smile. "Neither are we such fools. We would gladly have turned about, but the thing wouldn't work; neither could I stop my engine."

"Oh-o! I see," said the colonel. "I took your deed for an act of bravery, and for that reason I had planned to have you particularly cared for, so it was only an accident, eh? Orderly, have these fellows locked up with the others."

"We're officers in the United States Army, sir," Hal protested, "and, as such, are entitled to treatment as becomes our rank."

"You are American pigs!" was the angry response. "So American troops are really in France, eh? I never believed they would come. America is a nation of cowards."

Hal took a threatening step forward.

The German did not move from his chair, but called to his orderly:

"Take them away."

A moment later a file of soldiers entered and Hal and Chester were escorted from the colonel's quarters. An hour later they found themselves in a tent behind the German trenches together with the four Canadians who, such a short time before, had formed the crew of the tank that had advanced single-handed into the German lines.