In "Aids to Scouting" I have stated: "In the matter of spying we
are behind other nations. Spying, in reality, is reconnaissance in
disguise. Its effects are so far-reaching that most nations, in order
to deter enemies' spies, threaten them with death if caught."

As an essential part of scouting, I gave a chapter of hints on how to
spy, and how to catch other people spying.


CATCHING A SPY.

Spy-catching was once one of my duties, and is perhaps the best form
of education towards successful spying. I had been lucky enough to
nail three and was complimented by one of the senior officers on the
Commander-in-Chief's staff. We were riding home together from a big
review at the time that he was talking about it, and he remarked, "How
do you set about catching a spy?" I told him of our methods and added
that also luck very often came in and helped one.

Just in front of us, in the crowd of vehicles returning from
the review-ground, was an open hired Victoria in which sat a
foreign-looking gentleman. I remarked that as an instance this was the
sort of man I should keep an eye upon, and I should quietly follow him
till I found where he lodged and then put a detective on to report his
moves.

From our position on horseback close behind him we were able to see
that our foreigner was reading a guide book and was studying a map of
the fortifications through which we were passing. Suddenly he called
to the driver to stop for a moment while he lit a match for his