diplomacy

Léo Dex was the pseudonym of the brillant and distinguished aeronautical engineer Edouard-Léopold-Joseph Deburaux, who was commander of a company of hot-air balloonists attached to the French Army’s First Corps of Engineers. Under his given name, he wrote many books and papers on the possible uses of hot-air balloons for exploration and warfare. His grand experiment in balloon exploration—sending hot-air balloons across the Sahara from Tunisia to the region of Timbuktu—ended in failure, and he died shortly thereafter.