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The working title of this film was The Glory Parade. According to Film Daily news items, Richard Carroll and Richard Schayer were assigned to work on the picture's script, but their participation in the completed film has not been confirmed. Technical advisor Lieut. Franklyn Adreon's surname is spelled Andreon in the onscreen credits. This was the only Hollywood feature film directed by actor Lew Ayres. According to the biographical file on Ayres in the AMPAS Library, he agreed to act in two films for Republic if they would let him direct one. The two Republic features he appeared in were The Leathernecks Have Landed and King of the Newsboys. In 1941, Ayres became notorious for declaring himself a conscientious objector, although he later served with distinction in a medical unit.