Kammala wannan jumla: "Aéronautique Militaire" ta zaɓi nau'in don ba da ƙungiyoyi biyu, REP 15 da REP 27. Nau'in Ns daga tsohuwar naúrar ya tashi ayyukan bincike a lokacin
Yaƙin Charleroi a watan Agusta 1914, da Nau'in Ns daga duka rukunin biyu sun tashi a yayin Yaƙin farko na Marne a watan Satumba. Bayanin da jirgin sama na leken asiri ya bayar ya tabbatar da cewa babban abu ne a nasarar Allied a Marne. A watan Janairun 1915, an haɗu da raka'a biyu kuma an sake sanye su da Caudron G.3, amma sun ci gaba da aiki da REP Type N a kalla har zuwa Maris.