Facel was founded on 20 December 1939 by Bronzavia, a French manufacturer of military aircraft, to make special components. Marcel Koehler (formerly of motorcycle manufacturer Koehler-Escoffier) directed Facel from 1939 to 1945. He gave way to Jean Daninos when he returned from the United States, summoned by Henri Feuillée, the ex-boss of Bronzavia and a large shareholder of Facel. Jean Daninos had begun his career with Citroen, where he assisted in the design of the Traction coupés and cabriolets. He moved to Morane-Saulnier, then in 1937 to Bronzavia as technical director. During WWII he worked in the US with General Aircraft, which was using Bronzavia patents, but he returned in 1945 and took charge of Facel. Daninos merged Facel with Metallon, a tie maintained until January 1953.