Kunyora kupfuurira kweiyi ndima - Pashure pokugamuchira mutongo wakareruka munyika yake wokumiswa kwemwedzi mitanhatu, Brunet akapindazve muuto reFrance muna February 1870, nokurasikirwa kuduku bedzi mukukura. Mukati meHondo yeFrance nePrussian ya1870-1871 akazviratidza muhondo dzeSpicheren
, Mars-la-Tour uye Gravelotte. Akabatwa somusungwa paKukombwa kweMetz. Pashure pehondo Brunet akaita basa rinokosha senhengo yeVersailles Army mukudzvinyirira kweParis Commune. Akashanyira Royal School of Military Engineering muUnited Kingdom muna August 1871, uye gare gare gore iroro akaitwa mukuru weLégion d'honneur uye akapiwa se aide de camp kuna Gurukota reHondo, Ernest Courtot de Cissey.