Rubuta ci gaba don wannan sakin layi - A ƙarshen Zamanin Tsakiya an ga gina manyan bindigogi masu ƙarfi, da kuma yaduwarsu a duk faɗin duniya. Tun da ba su da tasiri a karya sabon garkuwar da ke haifar da ci gaban bindigogi, injunan kewaye - irin su hasumiyar kewaye da trebuchets - sun zama ba a amfani da su sosai. Duk da haka, katako "baturi-hasumiya" ya ɗauki irin wannan rawar a matsayin hasumiya a cikin shekarun gunpowder kamar wanda aka yi amfani da shi a Siege na Kazan.
a 1552, wanda zai iya ɗaukar manyan manyan bindigogi guda goma, ban da guda 50 masu sauƙi. Wani tasiri mai mahimmanci na bindigogi a kan yaki a wannan lokacin shi ne canji a cikin garuruwa na al'ada. Niccolò Machiavelli ya rubuta, "Babu wani bango, komai kaurinsa wanda bindigogi ba za su rushe shi a cikin 'yan kwanaki ba". Ko da yake ba a yi amfani da garuruwa ba nan da nan ta hanyar bindigogi, amfani da muhimmancin su a fagen fama ya ragu da sauri. Maimakon hasumiya mai girma da merlons, ganuwar sabbin kagara sun kasance masu kauri, masu kusurwa, da gangara, yayin da hasumiyoyi suka zama masu ƙanƙanci da ƙarfi; an kuma ƙara amfani da ƙasa da tubali a cikin ƙirji da kuma raguwa. Wadannan sabbin tsaron sun zama sanannun sansanonin bastion, bayan siffar halayyarsu wanda ya yi ƙoƙari ya tilasta duk wani ci gaba zuwa gare shi kai tsaye a cikin layin harbi na bindigogi. Wasu daga cikin waɗannan sun nuna batutuwan bindigogi, kamar Gidan Tudor's Device Forts, a Ingila. Ba da daɗewa ba sansanin bastion ya maye gurbin castles a Turai, kuma, daga bisani, wadanda ke cikin Amurka, ma.