Sur la route de Cernay
Actualités Francaises. Fr 1914
Print: Cinémathèque Royale de Belgique

“A short report on the strategic importance of the trenches near the village of Cernay. These started in the outskirts of Reims and ran through houses and gardens to get to the frontlines of the battlefield.”
European Film Gateway

French newsreels about WW I:
Les films militaires français de la première guerre mondiale – catalogue des films muets d’actualité. ECPA 1997