y.

"Come on!" shouted his chum, and, with their rifles and gas masks,
which they had brought up out of the shell hole, they rushed forward.
And as they advanced they became aware of shrill, whistling sounds in
the air about them.

"Duck! Duck!" yelled Roger. "They're firing over our sector now!
We've got to crawl back!"

Jimmy realized this as well as did his chum, and, in another moment,
the two were making their way back to their line as they had left it,
by alternately moving on their hands and knees and again by working
themselves forward on their elbows and stomach. It was the only safe
way. The horizontal storm of missiles was, fortunately, about three
feet above them, but that distance precluded walking upright.

"Come on, boys! Fall in! Fall in!" cried their lieutenant as Roger and
Jimmy got back "We're going to advance. You're just in time!"

"Did you find him?" asked Bob, as he leaped to his feet in readiness
for a dash toward the German lines.

"Yes. In a shell hole!" yelled Jimmy, for the firing was heavy on both
sides of them now, making a vicious din.

"Alive!" Franz wanted to know.

"Yes, alive, but how long he'll be that way it's hard to say,"
answered Roger. "He was under a pile of dirt and--"

"Come on! Come on!" cried the lieutenant. "We're going to finish the
job!"

He was leading his men, not driving them on as do the Germans,
and nobly the four Brothers and their fellows followed the gallant
lieutenant.

On they rushed--ever onward. About them swept the leaden hail of
death. Shoulder to shoulder, firing from the hip, rushed the four
Khaki Boys. And even in that terrible din of battle they spared a
thought for the gallant comrade who would have been with him if he
could.

With wild yells the Sammies swept over the first line of German
trenches. The Boches had deserted them in the face of a withering
rifle and machine-gun fire.

"Come on! Come on!" yelled the lieutenant again and again. "They're
laying down a perfect barrage for us! The Huns can't get through to
attack us!"

This was true, to a certain extent. Supported by the big guns in the
rear, the 509th Infantry was rushing onward. Before them, and ever
moving forward, was a never-ending curtain of fire--a hail of lead and
steel.

As this curtain advanced, caused by the continual but slow elevation
of the muzzles of the big guns, the infantry followed. And this fire
kept the German support from coming to save the lines tha