Lieutenant Jean Marie Luc Gilbert Sardier (1897-1976) was a World War I flying ace credited with 15 aerial victories.

During World War II, he was deeply involved in a veterans organization that collaborated with the occupying Nazis.

Jean Marie Luc Gilbert Sardier was born in Riom, France on 5 May 1897.

[citation needed] During World War II, Sardier was head of the Clermont-Ferrand branch of Legion Française de Combattants, a veterans group founded on 30 August 1940.

Although records are lacking, it seems that Sardier was one of the Legion officials who denounced fellow French citizens who espoused left wing political views.