What significant event deeply affected Saint-Exupéry and how did he respond through his work?

The rise of fascism in Europe deeply affected Saint-Exupéry. He responded by writing a series of reports from the front lines of the Spanish Civil War in 1937, exposing the horrors of the fascist regime. During World War II, he actively participated in the fight against fascism, serving as a pilot and writing works like 'Flight to Arras' (1942) and 'Letters to a Hostage' (1943), in which he expressed his conviction in the victory of democratic forces over fascism.