across. In the second book of the series, "The Khaki Boys On the
Way," we find our youthful heroes sailing for France after a series of
adventures, one a 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 aëroplane was on the
ground, temporarily disabled, stood off an attack of Germans and among