rank. "These are not first line troops that are up, but the ones who
are supposed to guard lines of communication and to garrison interior
fortresses."

There were times when more officers than men seemed to be in the town.
Amiens seemed to be used as a point where shipments of supplies and of
ammunition for troops at the front were concentrated and diverted to the
various divisions at the front. This involved the presence of a great
number of officers of the commissariat department, who seemed to work
night and day.

Men fight best on a full stomach, and the Germans understood this
thoroughly, and saw to it that their soldiers did not have to go into
battle hungry. Amiens also formed the headquarters of one branch of the
German flying corps. Here aviators in great numbers were present
constantly. Damaged monoplanes and biplanes were brought back for
repairs. And it was this fact that brought a startling experience to the
two scouts. For one day, as they rode on their bicycles on an errand
through the square before the Hotel de Ville, they were arrested by a
sudden fierce shout. An officer ran out toward them, his face distorted
with anger. And Frank, with a sinking heart, recognized him as the man
who had fired at Henri on the night they had burned the Zeppelins.

"Arrest that boy!" he cried, pointing to Henri. "He is a spy! He is a
French, spy, I say!"

For a moment Frank hesitated. Then he rode away, leaving Henri to his
fate. He looked back, to see two Germans holding his chum.

CHAPTER XX

A DESPERATE GAME

Frank had sped away because he was afraid that the officer might
recognize him in a moment also. And yet it was not fear, in the sense
that he was fearful of what might happen to him, that led him seemingly
to abandon his comrade. It was the knowledge that were he too a
prisoner, there would be no hope for either of them. He knew how the
Germans must have regarded the destruction of the Zeppelins. It was a
blow that might prove, when the final accounting was made, to have cost
them the success of the invasion of France. And he had no illusions as
to the fate of those who might be proved to be responsible for that.

Technically, they had not acted as spies when they had played the daring
trick that had resulted in such a disaster to the German cause. But they
had been non-combatants, civilians, and by the laws of war the civilian
who takes active measures of any sort against the enemy is liable t