“What is your plan?”

“You’ll know soon enough,” said Chester calmly. “Come on.”

For two hours the lads walked along, gradually drawing out of the city at the eastern extremity. They passed many German officers as they walked along, but were not molested nor even challenged.

Finally, beyond the city, Chester increased his pace and the two boys and the dog hurried on. At length they came to a large building.

“I thought I was right,” said Chester to himself. “But I was beginning to doubt it.”

“What is it?” demanded Hal. “What is that building?”

“That,” said Chester calmly, “is an aëroplane station. We shall now go in and get one.”

“Oh, we will, eh? And I suppose they give one to every strange officer who happens along?”

“No, they don’t,” said Chester. “But, among other things in General Strauss’s desk, I found several orders upon this place, each one calling upon the commandant to furnish bearer with one plane.”