"It gets my goat to think of those Heinies chuckling to themselves
because they put one over on us," gritted Billy between his teeth.

"They laugh best who laugh last," growled Bart. "They'll laugh on
the other side of their mouth when we lay hands on them."

"If we ever do," muttered pessimistic Tom. "But here comes our
relief," he continued, as the light of a lantern hanging on the
arm of the foremost man revealed a group coming toward them. "High
time, too! I got drenched to the skin while I was lying on the
ground in that alley."

"Of course we'll have to report the whole thing to the corporal,
shan't we?" inquired Bart.

"I suppose we shall," Frank acquiesced, though reluctantly.
"Personally, I'd like to keep the whole thing up my sleeve until
we've solved the mystery. But there's danger abroad to-night, and
it wouldn't be fair to the boys who are going to take our places
not to put them on their guard."

The corporal of the guard now had come so close that the light of
his lantern fell upon the group of Army Boys.

"You fellows are all here, I see," said the corporal, who was the
boys' old friend, Wilson. "What was that shooting going on here?
None of you hurt, I hope."

"Dripping wet but right as a trivet," Frank replied with a smile,
and then went on to make his report of the occurrences of the