[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.

[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.

[6] Leduc's academic pursuits paralleled his professional growth; in 1929, he defended a thesis on prismatic beams at the University of Paris.

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.