 Nyorai kupfuurira kweiyi ndima - France neGermany zvakatsinhanisa zvirevo zvehondo pana 3 August 1914 sezvo Hondo Yenyika I yakatanga. Pakutanga kwehondo, Duval akabatanidzwa muHondo yeFrontiers, uye akatapwa nemauto eGermany paMaubeuge musi wa7 Gunyana 1914. Akatiza musi wa13 Gunyana 1914 uye akabatana ne9th Zouave Regiment, kwaakapedza nguva yasara yehondo. Akabatanidzwa muHondo Yokutanga yeMarne muna September 1914, uye akakuvadzwa zvakakomba musi wa 16 September 1914. Nokuda kwezviito zvake, akaitwa Knight of the Legion of Honour pazera remakore 20 musi wa 15 November 1914. 