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One of the many ironies of the American Civil War was that a
colleague of Major Albert J. Myer, detailed to assist him in
perfecting his system to the satisfaction of the War Department
just before the war, served the South. Edward Porter Alexander of
Georgia was a West Point graduate military engineer. With the
secession of his state, Alexander opted for the Southern cause and
was charged by President Jefferson Davis with organizing a signal
corps to serve Confederate forces facing Washington. With the
advance of the Federal army toward Manassas (Bull Run), Virginia,
in the spring of 1861, Alexander found himself on an elevation that
afforded an excellent view of the developing battle. A chance
glance revealed a critical enemy flanking movement that endangered
his side. Grabbing a flag, he frantically waved to attract the
attention of one of his trainees: “LOOK TO YOUR LEFT - YOU ARE
TURNED.” The tactical warning, as well as demonstration of tactical
communication, made quite an impression on generals of both sides.
Myer subsequently used Alexander’s exploit to petition Congress to
organize a signal corps for the North, even as his erstwhile
student and colleague established the system in the South.
Against this background of innovation, embryonic technology, and
innocence, the Civil War stands as something of a watershed, and
the seeds and sprouts of cryptology are evident at every turn. In
1862, the South adopted the centuries-old Vigenère as its principal
official cipher. The South enciphered important messages with the
Vigenère, then transmitted with a flag code that might or might not
be “read” by the enemy.
The North implemented the Myer system, later known as wig-wag,
featured one flag or two torches for battlefield signaling.
The flags come in three color schemes: a red square in the middle
of a white background, white on black, or black on white. The flag
that is used at any time depends on the visibility.
The flags come in three sizes: two feet by two feet, four by four,
and six by six. The 2x2 flags are used in battle to send messages
back to headquarters and to send back commands, sometimes by more
than one signaler. The 4x4 flags are used for almost everything
else. The 6x6 flags are for sending messages that can't wait until
night so they could use the torches. These flags are so heavy that
no one really wanted to use them.
One torch is put on a pole and waved around and is called the
action torch. The other was stuck on a stake and called the foot
torch. The purpose of the foot torch is to decipher if the message
is meant for you or for the guy on the other side of the sender.
The torches run on turpentine. Turpentine is used in the torches
because it burns brighter than kerosene. People don't use
turpentine in lamps because it is far too volatile to be used in
that manner.
The code uses three positions. Position one is to the left.
Position two is to the right. Position three is forward.
The systematizing of signals, using the bases of two elements,
admits of such illimitable applications at once so much more simple
and more numerous, than any other, that is seems best adapted to
universal use. That signals could be made with two elements, has
probably been known form very early antiquity by studies of the
subject. The first systems recorded, seem to have been based upon
this plan. To understand its practical use in the field, take an
alphabet of two elements, devised by the given rule; as, for
instance:
A is one, one, or 1 1. (*)
B is one, two, two, one, or 1 2 2 1.
C is two, one, two or 2 1 2.
D is one, one, one 1 1 1;
and so on, combinations of "ones" and "twos."
(*) Modified from 1864 manual which read "A is one, two, or 1 2".
This was done within the manual in order to explain the how the
system worked, without disclosing the actual code used.
I spent some time as a Civil War Reenactor in an Artillery Unit
(Richmond Fayette Artillery) in California. Before I left a friend
of mine and I set up a Signal Corps for our club. This puzzle is
based on some of the cryptography and signaling I learned. And yes,
this is where I got the name Sparky.
This is my first Puzzle Cache I hope you enjoy it.
Please bring your own GeoStick.
Feel free to contact me for assistance.
You can check your answers for this puzzle on
Geochecker.com.
nxfqn tbws kkvvv eppv gtosd qwv
ldvl krwp egypg zyik getob koy isthv avvuv bwu expn eauj cteb
lvb
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