startling one, at Camp Marvin. This adventure had to
do with the blowing up of a bridge, and Jimmy Blaise had a fight with
a spy--a fight that came near being Jimmy's last.

In this second book will also be found an account of the trip of the
Khaki Boys to the coast, where they boarded a transport for France. If
they expected to get across safely, as many thousands did, they were
disappointed, for they were attacked by a U-Boat. Many on board the
transport _Columbia_ perished, but the five Brothers were saved, and,
after a time spent in a rest camp in England, they crossed the channel
to France.

The third volume, called "The Khaki Boys at the Front," tells in
detail some of their exciting experiences. The quintette were given
leave to go from their camp to Paris, and in that beautiful city they
met some other friends, the Twinkle Twins, otherwise John and Gerald
Twinkleton, who had joined the aviation branch of the service. This
was natural, since their cousin, Emile Voissard, was one of the most
daring of the airmen, meriting the name "Flying Terror of France."

In that book, too, you may read of how Franz Schnitzel, by his
knowledge of the German tongue, was able to give advance notice of a
raid he overheard the Huns planning. The raid was a failure from the
German standpoint, but during it some of our Khaki Boys were wounded.

Adventure followed adventure, but in one "grand" one, as a Frenchman
would call it, Jimmy, on guard when Voissard's aeroplane was on the
ground, temporarily disabled, stood off an attack of Germans and among
others he killed Adolph von Kreitzen, known as the "tiger man." On his
head the French government had set a price of five thousand francs, or
about a thousand dollars, and of course Jimmy won this.

So now, in the opening of this present story, we find our five Khaki
Boys still together after many strenuous happenings. They had been
wounded but were now recovered and they had fought valiantly.

In the last chapter of the book immediately preceding this, if you
recall, the lads had written letters home--letters which might be
their last, they thought, for they had orders to take their places in
the front line trenches to await the zero hour. Two of the Brothers
had been separated from their chums, but all were reunited as we have
seen.

Then had come the command to go over the top, and there had followed
the fierce rush in the gray dawn of the morning--a rush punctuated by
fire, smo