Rubuta ci gaba don wannan sakin layi - Bayan aikin soja, Lartéguy ya yi aiki a matsayin wakilin yaki, musamman ga mujallar "Paris Match". Ya rufe rikice-rikice a Azerbaijan, Koriya, Ƙasar Mai Tsarki, Indochina, Algeria
, da kuma Vietnam. A cikin bin labarin a farkon Yakin Koriya, Lartéguy ya ba da kansa ga Battalion na Faransa kuma an ji masa rauni ta hanyar bindigar hannun abokan gaba a lokacin yakin Heartbreak Ridge. A Latin Amurka, ya ba da rahoto game da juyin juya hali da tawaye daban-daban, kuma a cikin 1967 ya ci karo da Che Guevara jim kaɗan kafin a kama shi kuma a kashe shi. A cikin fitowar watan Yulin 1967 na Paris Match, Lartéguy ya rubuta wani babban labarin mai taken "Les Guerilleros", inda ya rubuta: "A lokacin da 'yan juyin juya halin Cuba ke son ƙirƙirar Vietnam a duk faɗin duniya, Amurkawa suna fuskantar haɗarin samun nasu Aljeriya a Latin Amurka".