der him first aid if necessary.

He communicated with Billy in whispers.

"We've gone and done it, old scout," he whispered. "We're on the
German side."

"That's good news--I don't think," returned Billy.

"Let's swim in under this old pier," suggested Frank, "We'll be out of
sight then and we may strike a bit of beach up toward the head of it."

They followed the suggestion and were relieved to find that there was a
little stretch of dry sand beyond the water line. They took Bart from
the plank and bore him out on the sand. Here they rubbed his wrists
and tried as far as they could in the darkness to ascertain the extent
of his injuries. Frank did not dare to use his flashlight for fear of
betraying their presence to the enemy.

To their immense relief Bart soon showed signs of returning animation.
He opened his eyes and was about to speak, when Frank put his hand
gently on his lips.

"Don't speak, old man," he whispered. "You're all right. It's Frank
speaking. Billy's here. Just whisper to me and tell where you're
hurt. But be careful, for the Germans are all around us."

"Guess I'm not hurt much," whispered Bart. "Got a clip on the head
when that beam struck the boat."

"Sure you didn't get a bullet?" asked Frank anxiously.

"I don't think so," replied Bart. "Head's dizzy from that crack, but I
feel all right everywhere else."

"Bully!" said Frank. "Now you just lie there till you get your
strength back, and then we'll figure out what's to be done."

It was a hard problem, and it became none the easier a few minutes
later when a boat came along under oars and was tied up at the end of
the pier. It was a big boat and similar to those in which the Germans
had made their unsuccessful attempt to cross the river a few days
before.

It had evidently been out in the river picking up the wounded who had
been thrown into the stream by the explosion. The rickety planks
creaked as the soldiers carried the wounded survivors over the pier to
the bank beyond. It would have been an exceedingly bad time for the
Army Boys to be discovered and they crowded back as far as they could
to escape detection.

The Germans were in a terrible rage over the body blow that had been
dealt them in the destruction of the bridge. Apart from the heavy
losses in men their entire plan of campaign would have to be
reconstructed.

"That one bullet of yours was a mighty effective one, Frank," whispered
Billy.

"It was