tly
with them, was Captain Frank Dickerson, and this time he wore the
uniform of an American officer, with the two bars denoting his
captaincy!

CHAPTER XXII

FIERCE FIGHTING

Jimmy's astonishment at seeing the man they had called a German spy
was duplicated by his companions. With one accord they halted and
stood staring at the captain who had saved their lives. On his part
he did not see them, apparently. He stood there talking with other
officers as calmly and coolly as though nothing worried him.

"There he is!" exclaimed Bob.

"No question about it!" said Roger.

"The dog!" fairly hissed Franz. "And to think he's going to betray our
secrets to the Huns!"

"Not if I can help it!" declared Jimmy, and there was firm resolve in
his voice.

"What are you going to do?" asked Roger, though he could almost guess
the answer of his chum.

"Come over here," said Jimmy Blaise to the otter Brothers. It was time
they should be marching up on their way to the front to take part in
the big advance. But there was also vital necessity of action at this
juncture. And so many soldiers and officers were hurrying along that
the temporary halt of Jimmy and his bunkies would not be noticed.

"Don't we to fight go?" asked Iggy, somewhat puzzled by the halt. "I
mine gun haf und many bullets. To fight it is my idea, yes."

"You've got the right idea!" declared Bob. "We'll be fighting soon
enough. But Iggy, do you see that fellow over there?" and he pointed
to Captain Dickerson.

"Sure I see him. Him was the man what saved us at the fire."

"Exactly. And he went over toward the Germans, didn't he?"

"I thinks me he did," admitted Iggy.

"When did you see him last?" asked Franz, as if this was a trial and
he had the examination of witnesses in hand.

"We saw him between our lines and the German forces, and he wore a
German uniform," declared Bob.

"And now he wears an American outfit," added Roger.

"That settles it!" declared Roger. "The verdict is unanimous. Captain
Dickerson, as he calls himself, is a spy, and it's our duty to
denounce him!"

"Yes," said Sergeant Jimmy, "he saved our lives--there's no doubt
about it. But he's a spy. It breaks my heart to do it, but duty is
duty! We'll have to expose him!"

He looked at Roger and Bob. Solemnly and mournfully they nodded their
heads in assent.

"I don't know as much about it as you three fellows do," said Franz,
"but it sounds as though you'd have to. Tou