The Tools of Disinformation and Propaganda

"In wartime they attack a part of the body that other weapons cannot reach in an attempt to affect the way which participants perform on the field of battle." (Taylor, Munitions of the Mind, p. 9)
Therefore the demonstrated tools refer to political propaganda in the two World Wars.

Propaganda has the ability to change a war, a natural evil, into a so-called "just" war. Violence then is supposedly defense, no more aggression.

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Chappe's fixed optical network

Claude Chappe built a fixed optical network between Paris and Lille. Covering a distance of about 240kms, it consisted of fifteen towers with semaphores.

Because this communication system was destined to practical military use, the transmitted messages were encoded. The messages were kept such secretly, even those who transmit them from tower to tower did not capture their meaning, they just transmitted codes they did not understand. Depending on weather conditions, messages could be sent at a speed of 2880 kms/hr at best.

Forerunners of Chappe's optical network are the Roman smoke signals network and Aeneas Tacitus' optical communication system.

For more information on early communication networks see Gerard J. Holzmann and Bjoern Pehrson, The Early History of Data Networks.

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