Rubuta ci gaba don wannan sakin layi - Ginin farko a dutsen Perches wani shinge ne da aka tono daga 1815. An gina sansanin soja mai bushe a wurin Basses Perches a 1870 ta Colonel Pierre Denfert-Rochereau yayin kare Belfort
, a tsawo na 425 m. An gina Fort des Basses Perches na yanzu a wannan shafin, kamar yadda ya tabbatar da cewa yana da muhimmiyar mahimmanci na kudancin Belfort a lokacin yakin Franco-Prussian. Kusan rectangular sansanin soja ne sananne ga ta farkon amfani da counterscarps maimakon caponiers, wanda ya kasance mafi mashahuri har sai.