ing
better than to have a hand in getting him away, but I haven't yet been
able to figure out a shadow of a plan. Have you?"

"The only thing, I can think of is to organize a big raid on the section
where he's held--I mean somewhere near the German prison--and if we
bombed the place enough, and created enough excitement, some of us might
land and get Harry and any others that might be with him."

Tom shook his head.

"That'd be a pretty risky way of doing it," he said.

"Can you think of a better?" Jack demanded quickly.

"Not off hand," came the reply. "We've got to stew over it a bit. One
thing's sure--we've got to get Harry out, or his sister never will feel
like going back home and facing the folks."

"That's right!" agreed Jack. "We've got a double motive for this. But
I'm afraid it's going to be too hard."

"That's what we thought when we rescued Mrs. Gleason from the old castle
where Potzfeldt had her caged," retorted Tom. "But you made out all
right."

"Yes; thanks to your help."

"Well, we'll both work together again," declared Tom. "And now let's
try this Lewis gun. The last time we were up it jammed on me, and yet it
worked all right on the ground." So they tested the guns, looked to the
motor, and in general made ready for a flight when the weather should
clear.

This happened two days later, when the fog and mist were blown away and
the blue sky could be seen. In the interim the artillery and infantry
on both sides had not been idle, and there had been some desperate
engagements, with the brigaded American troops making a new name for
themselves.

"I guess there'll be something doing to-day," remarked Tom, as he and
Jack tumbled out of bed at the usual early hour. "Clear as a bell," he
announced, after a glance from the window. "Shouldn't wonder but what we
went over their lines to-day."

"And I suppose, by the same token, they'll be coming over ours," and
Jack nodded to indicate the Germans.

"Let 'em come!" exclaimed Tom. "It takes two sides to make a fight, and
that's what we're here for."

Hardly had the two air service boys finished their breakfast, than an
orderly came to tell them the commanding officer wanted them to report
to him. They hurried across the aviation ground, toward the headquarters
building, noting on the way that there were signs of unusual activity
among the newer members of the American air forces, as well as among the
French and British veterans.

"Must be goin