Jean Marie Luc Gilbert Sardier was born in Riom, France on 5 May 1897.^[2]

On 8 September 1914, he volunteered to serve his country until war's end, and was accepted as a cavalryman. On 22 September 1915, he was posted to aviation's Escadrille 1. On 22 February 1916, he began instruction to become a pilot. He received his Military Pilot's Brevet on 19 May 1916. On 10 June 1916, he was also breveted as an aerial observer.^[2]

Sardier joined Escadrille N.77 at its inception, on 29 September 1916.^[2]

His victory list began on 7 November 1916, with his second on 3 June 1917; his 1918 skein of 13 victories began 4 January and nearly ran to war's end. On one occasion, he shot down three Germans in a single day; another day, two fell to his guns. During this long run, he teamed with several other aces in scoring, including fellow aces Maurice Boyau, Laurent B. Ruamps, Francis Guerrier, and Marcel Haegelen. Sardier was a balloon buster, with five observation balloons among his 15 triumphs.^[2]

On 5 July 1918, he was appointed to lead the squadron. By war's end, he had flown 241 hours combat time with them.^[2]

Sardier remained in aviation after war's end. He joined with Louis Chartoire to establish the Aero-Club d'Auvergne on 8 May 1920. In August 1922, he flew his triplane glider at a convention of experimental gliders that took place near his home. President of the club, he attended a Marseille-based national convention of aero clubs on 16 and 17 September 1932. One of the first French flying clubs, it still exists today.^{[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. From its original role as a veterans aid society, the Legion slid into the role of siding with the Vichy Government installed by the occupying German Nazis. 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. Despite this, the occupying Germans not only would not share information about French citizens detained; they evicted Sardier from his home and housed a German colonel there.^[3]

Gilbert Sardier died on 7 October 1976.^[2]

• Chevalier of the Legion d'honneur: 30 June 1918

• Officier of the 'Legion d'honneur: 27 December 1918

• Médaille militaire: 17 September 1917

• Croix de Guerre with nine palmes, an etoile de vermeil, and one etoile de argent

• American Distinguished Service Cross^[2][4]

• British Military Cross^[2]

• Franks, Norman; Bailey, Frank (1993). Over the Front: The Complete Record of the Fighter Aces and Units of the United States and French Air Services, 1914–1918. London, UK: Grub Street Publishing. ISBN 978-0-948817-54-0.

• Sweets, John F. (1994). Choices in Vichy France: The French Under Nazi Occupation. Oxford University Press. ISBN 0-19-509052-7, ISBN 978-0-19-509052-9.

• (in French) Biography, list of aerial victories, color profiles of his planes