Pendaries was born in
Chambéry, France on 21 June 1894. Pendaries was inducted into the infantry early in World War I, on 4 September 1914. On 17 December 1914, his infantry career was cut short by a terrible wounding. After he finally recovered, he was forwarded to be a student pilot on 19 August 1915. On 17 January 1916, he received his Military Pilot's Brevet. On 6 May 1916, he began flying combat with
Escadrille N.69. Shortly after his third victory, he was awarded the
Médaille militaire on 28 May 1917. On 3 June, he again was seriously wounded. His recuperation was not complete until 2 February 1918, when he was assigned to
Escadrille SPA.67. Having progressed through the enlisted ranks, he was promoted to
Sous lieutenant on 28 March 1918. By war's end on 11 November 1918, Pierre Pendaries had flown 1,180 combat hours. In addition to the
Médaille militaire, he won the ''
Legion d'honneur and the Croix de Guerre'' with seven palms. Pendaries was demobilized from the French military on 21 September 1919. At some later date, he was upgraded in the ''
Legion d'honneur to Commandeur''. ==List of aerial victories==