Soon, from raw recruits the boys had been developed into skillful
soldiers, as is shown in the second volume of the series,
entitled: "Army Boys in the French Trenches; Or, Hand to Hand
Fights with the Enemy."

The Spring of 1918 had now arrived, and the Germans were preparing
for the last desperate drive, on the success of which their
fortunes depended. If they could once break through the Allied
lines and seize Paris or the Channel ports they would have come
near to winning the war, or at any rate, would have greatly
delayed the Allies' final victory. The Americans were brought to
the front to check the thrust of the Crown Prince's army toward
Paris, and the old Thirty-seventh found itself in the very van of
the fighting. Tom was captured, and had a series of thrilling
experiences before he was able to escape and rejoin his comrades.
Nick Rabig came out in his true colors, and his guilt as a traitor
was discovered by Tom, while hiding in the woods. How the boys
were brought again and again within arm's length of death in the
terrific fighting is told in the third volume of the series,
entitled: "Army Boys On the Firing Line; Or, Holding Back the
German Drive."

On July eighteenth, Marshal Foch struck like a thunderbolt and
hurled the foe back in a headlong retreat. Again and again the
Germans tried to rally, but the Allies were fired with the
certainty of victory and would not be denied.

Frank and his comrades were wherever the fighting was thickest,
and did their full share in driving the Germans back to the Rhine.
An event which for a time put Frank under a cloud, because it