The army behind the armyPowell, E. Alexander (Edward Alexander)
History
The army behind the army
Powell, E. Alexander (Edward Alexander)
United States. Army; World War, 1914-1918 -- United States
Another system had as its basic principle the breaking up of the groups
of Morse dots and dashes which represented the letters of the message,
and routing these mangled fragments over widely separated wires to the
receiving-station, where they were automatically joined together again
so as to form the message as originally sent. If, for example, it was
desired to send from Hoboken to Washington the message “_Transport
Leviathan sails June twenty-fifth_,” it was proposed to make use of
two lines, one running, let us say, through Harrisburg, the other via
Wilmington. The message sent over the Harrisburg wire would be broken up
something after this fashion: “t-a-s-o-t-e-i-t-a-s-i-s-u-e-w-n-y-i-t,”
while the portion going by way of Wilmington would read:
“r-n-p-r-l-v-a-h-n-a-l-j-n-t-e-t-f-f-h.” To create still further
confusion in the mind of any one who might succeed in intercepting one of
these sets of fragments, it was proposed to superimpose a “camouflage”
message upon the disconnected letters, the characters of the camouflage
message to occupy the spaces between the characters of the real message.
By an exceedingly ingenious device, these apparently inextricably
intermixed and unrelated letters were automatically sorted out at the
receiving-station and pieced together, like a jigsaw puzzle, so that the
message appeared precisely as it was sent. Going a step further, the
inventors of this system proposed by the same means to install a system
of telephone communication whereby the spoken words would be broken
up just as the Morse characters were divided, certain sounds in each
word going over one wire and the remaining sounds over another, to be
joined together at the receiving-station into a perfectly intelligible
conversation. Here again a wholly separate and extraneous conversation
was superimposed over the sounds proceeding by each route, so that
were either of the lines tapped the listener-in would be rewarded for
his pains by hearing a torrent of sound which would convince him that
he was listening to a combination of Choctaw, Chinese, the ravings of
John McCullough, and the symptoms of a severe cold. Notwithstanding
the undeniable ingenuity of this system, the Signal Corps experts
demonstrated, to the unconcealed astonishment of the inventors, that they
could overhear and understand these crazy-quilt conversations as readily
as though they were being held across a dinner-table in plain English.
Public-domain text, read in full here on John Shaqi.
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