[3] During World War I, he joined the artillery, fought on the front lines, and graduated as a top-ranking officer from the Fontainebleau cadet training school.

[4] After the war, Leduc pursued an engineering degree at the École Supérieure d'Électricité, specializing in thermodynamics and material resistance.

[6] He returned to France in 1924 after his father's death and joined the Louis Breguet's workshops, where he quickly rose to head of the calculation office.

This work, combined with his passion for aerodynamics, led him to file his first patent for an intermittent reaction thruster, a propulsion system that would later inspire the pulse jet engines used in the German V-1 flying bombs.

[8] This innovation caught the attention of Louis Breguet and the French Ministry of Aviation, providing Leduc with funding and support to conduct experimental tests.