Rubuta ci gaba don wannan sakin layi - An inganta ginin sansanin a karkashin Daular Jamus, wanda ya sake masa suna Fort Goeben bayan wani janar na Prussian wanda ya bambanta kansa a yakin Spicheren
a ranar 6 ga watan Agusta 1870. Ginin Jamus na nan da nan ya mayar da hankali ga watsawa batir na bindigogi zuwa matsayi na gefe da kuma karfafa kariya ga ma'aikata da bindigogi a kan shellfire. A cikin 1885, sabbin abubuwan fashewa sun haifar da ƙaruwa mai yawa a cikin ƙarfin fashewar harsasai na bindigogi, abin da ake kira "crise de l'obus-torpille" ("matsalolin harsashi na torpedo"). Wannan ci gaba ya sanya kayan aikin da ba a kare ba da kuma gine-ginen gine-ginen ba su da amfani, kamar yadda sababbin harsasai zasu iya lalata gine-ginen gine-gine. A sakamakon haka, an yi amfani da shinge da ƙasa a cikin sababbin garuruwa, kuma an ƙarfafa tsofaffin garuruwa a ƙarƙashin sababbin ka'idoji. A cikin 1885 shirin ƙarfafa ya rufe wasu yankuna masu mahimmanci na Queuleu tare da kankare kuma ya samar da mafi kyawun mafaka. A matsayin sansanin soja na farko, Queuleu yana da ƙananan hanyoyin da ke ƙarƙashin ƙasa idan aka kwatanta da "Moselstellung" na shekarun 1890, amma yana da fasalin magungunan rigakafi da ke fitowa daga gaban sansanin soja.