The type was selected by the "Aéronautique Militaire" to equip two squadrons, REP 15 and REP 27. Type Ns from the former unit flew reconnaissance missions during the Battle of Charleroi in August 1914, and Type Ns from both units flew missions during the First Battle of the Marne in September. Intelligence provided by reconnaissance aircraft proved a decisive factor in the Allied victory at the Marne. In January 1915, the two units merged and were re-equipped with Caudron G.3s, but continued to operate the REP Type N at least as late as March.