Stock Photo - France, History, 19th Century, Charles Barbier de la Serre was the creator of night writing Charles Barbier de la Serre was a Captain in the French Army during the early 19th century ´Ecriture Nocturne´ night writing was invented in response to Napoleon´s demand for a code that soldiers could use to communicate silently and without light at night 1 Barbier´s system was related to the Polybius square, in which a two-digit code represents a letter In Barbier´s variant, a 6x6 square includes most of the letters of the French alphabet, as well as several digraphs and trigraphs:

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