Background
He was born in Lemberg, the son of an Austrian cavalry officer, and was expected to follow a military career.
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Edouard Wostrowitz
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See Grille (cryptography)
After serving in the Chevaux-légeres Regiment Number 6, he was appointed Commandant of the Officer School at Ödenberg in 1871 and promoted to full colonel in 1872. Before retirement, at the end of 1874, he was ennobled and became Kommandant Oberst Edouard Freiherr von Fleißner von Wostrowitz. His book Handbuch der Kryptographie was published in Vienna, in 1881.
Jules Verne popularised the turning grille in his novel Mathias Sandorf, published in 1885, by using it as a plot device.
Later, the German Army adopted turning grilles of various sizes during the First World War for immediate cipher traffic.
