On September 20, 450 AD, the Battle of the Catalaunian Plains also referred to as the Battle of Chalons took place. A coalition led by the Roman general Flavius Aëtius and the Visigothic king Theodoric I against the Huns and their allies commanded by their leader Attila faced each other in a decisive battle that should decide the fate of Europe and the whole Western civilization...
During the night of 23 to 24 July 1775, French criminal and criminalist Eugene Vidocq was born. Vidocq is considered the world's first private detective and father of modern criminology. His life story inspired several writers, including Victor Hugo and Honoré de Balzac.
On March 7, 1765, French inventor Nicéphore Niépce was born, who is best known as one of the inventors of photography and a pioneer in the field. He developed heliography, a technique used to produce the world's first known photograph in 1825.
On September 1, 1902, the French film pioneer George Méliès presented the very first science fiction movie to the stunning public of the Paris Olympia theater.
Today 199 years ago, the first (modern) optical telegraph line following the mechanical telegraphy system of the French inventor Claude Chappe was established between Metz and Mainz was established. No, this wasn't the first of its kind, but it was the first to connect the former already in France established telegraphy system with a (now) German city.