About the film
Conquest of the Air is a 1931 documentary film or docudrama on the history of aviation up to that time. The film features historical footage, and dramatic re-creations, of the developments of commercial and military aviation; including the early stages of technological developments in design, propulsion, and air navigation aids. The film was a London Films production, commissioned by the British Air Ministry.
From the film's Wikipedia article (CC BY-SA 4.0).