other fine day was well on its way and as Dave screwed his
head around so that he could look high up into the blue sky he saw
cluster after cluster of planes in line and in V formation. And all of
them were moving swiftly westward. By straining his ears he could just
barely catch the throbbing beat of German engines. Even as their sound
came to him he heard louder and more thunderous sounds farther to the
west. He did not need two guesses to know that German bombers were once
again dropping their loads of death and destruction upon the soldiers
and civilians of the countries Adolf Hitler desired to crush under his
iron heel.

He turned from the window and stood staring flint eyed at nothing at
all. Yesterday he had reached seventeen years of age. But today? Today
he somehow felt a dozen years older than that. What he had seen since
leaving Paris had added years to his way of thinking, if not to his
body. A fierce anger at the injustices wrought had sprung up within him.
He wanted to do something about it. What, he did not know. But today
there had been born in him a blazing desire to do what he could to spare
Europe, and perhaps the whole world, from the bullets and bombs and the
tyranny of the Nazi legions.

"What are you thinking of, Dave?"

Freddy's quiet voice at his elbow jerked him from his thought trance. He
turned and stared into the clear blue eyes of his new found friend and
ally in the face of danger.

"A lot of things, Freddy," he said. "Maybe I'm crazy, but I want nothing
better than the chance to do something. A chance to get back at these
Germans for what I've seen them do. We may be kids and not old enough to
enlist, Freddy, but there must be _something_ we can do to help. And,
believe me, I sure want to do it. Listen, Freddy, have you any idea
where we are? I've never been in Belgium in my life. And I guess this is
still Belgium, isn't it?"

"Yes, I could tell from the looks of the buildings, and some of the
townsfolk I saw when we arrived," the English youth said. "But what town
this is, I haven't the faintest idea. I ... Wait!"

"What's the matter?" Dave asked.

"That map in the colonel's office downstairs!" Freddy whispered
excitedly. "Did you see it, and see how it was marked with those little
pins and tiny flags?"

"Sure, I saw it," Dave said with a nod. "But I didn't pay much attention
to it."

"Nor I," Freddy said. "But I'll bet you something, Dave. This is an
Intelligence headquarter