Ka cika wannan magana: Yaƙin Duniya na ɗaya ya ɓarke sa'ad da Brooks yake Faransa, kuma ya zama direban motar asibiti, daga baya ya zama wakilin jarida na "The New York Times" da "Collier's". Daga bisani ya fara aiki a matsayin direba na motar asibiti ga sojojin Amurka a kan gaba. Yana da sha'awar shiga A.E.F kuma ya yi tunanin hanya mafi sauri ita ce yin karatu a makarantar makamai na Faransa. Ya yi aiki tare da Sojojin Faransa kuma ya kai matsayin laftanar wani baturi na filin, bayan da aka ƙi karɓar takardar neman izininsa zuwa sojojin Amurka saboda rashin gani. Ya ga aikin a
Marne, Chemin-des-Dames, Chateau-Thierry da Meuse-Argonne, kuma an ba shi kyautar "Croix de Guerre" tare da tauraron azurfa don ƙarfin hali yayin da yake aiki a cikin manufofi na musamman a Faransa a ranar 15 da 16 ga Yuli, 1918. Ya yi nadama da yawa daga abin da ya gani, gami da yadda Janar Robert Lee Bullard ya aika da sojojin Amurka don yin yaƙi da mutuwa duk da cewa za a ayyana yarjejeniyar tsagaita wuta a cikin 'yan sa'o'i kaɗan, kuma ya rubuta game da wautar yaƙi: