Dee ihe na-esote paragraf a - Pétain duru ndị agha ya n'agha nke Guise (Ọgọst 29, 1914). Na ngwụcha Ọgọstụ 1914, a kwalitere ya ngwa ngwa ka ọ bụrụ brigadier-general ma nye ya iwu nke Ngalaba nke 6 n'oge maka Agha Mbụ nke Marne; obere ihe karịrị otu ọnwa ka e mesịrị, n'ọnwa Ọktoba 1914, a kwalitere ya ọzọ wee bụrụ onye isi nke XXXIII Corps. Mgbe o duchara ndị agha ya n'oge opupu ihe ubi nke afọ 1915 na Artois Offensive, n'ọnwa Julaị nke afọ 1915, e nyere ya iwu nke ndị agha nke abụọ, nke o duziri na Champagne Offensive
n'oge mgbụsị akwụkwọ ahụ. A maara ya dị ka otu n'ime ndị ọchịagha kasị nwee ihe ịga nke ọma n'Ebe Ọdịda Anyanwụ Ụwa.