After the First World War (1.4 million soldiers fell for France), the national authorities and associations undertook to perpetuate the memory of this sacrifice. As a result, the idea of paying tribute to the remains of a soldier became widespread.
On 10 November 1920, in Verdun, the soldier Auguste Thin, with André Maginot, Minister of Pensions, by his side, designated an unknown soldier from among 8 coffins containing the bodies of unidentified French servicemen. The remains were transferred under the Arc de Triomphe on 11 November 1920, before being buried in their final location on 28 January 1921.
To keep the memory alive, the journalist Gabriel Boissy launched the idea of a symbolic flame. Architect Henri Favier's design was chosen and executed by wrought-iron craftsman Edgar Brandt. The Flame was designed to emerge from the muzzle of a cannon pointing skywards, encased in an inverted shield, the chiselled surface of which was made up of swords forming a star.
On 11 November 1923, André Maginot lit the Flame of Remembrance for the first time. Since then, it has been rekindled every evening during a ceremony organised by the Flame Committee under the Arc de Triomphe, Flame of the Nation.