"So should I," agreed Jacques. "We'll do it then, only we'll have to keep a mile or so behind the front."
"That's all right," exclaimed Earl. "We can see if we're a mile or so high."
They had covered scarcely two miles from the village of Flambeau when Leon suddenly spied another aeroplane.
"Look!" he cried excitedly. "There's another monoplane!"
"Where?" demanded Jacques.
"To your right."
One glance was enough for Jacques. His experienced eye immediately identified the stranger and he turned to his two aides.
"That's a German flier," he remarked. "Get the machine-gun ready."
"What are you going to do?" demanded Earl eagerly.
"Chase him of course," said Jacques.