Kammala jumla mai zuwa: A cikin Gaul, sansanin soja na Alesia yana ƙarƙashin kewaye da Romawa a shekara ta 52 BC, kuma an kewaye shi gaba ɗaya ta hanyar Roman ƙarfafa ciki har da palisade na katako da hasumiyoyi. Kamar yadda aka saba da dabarun kewaye a lokacin, an sanya kananan ballistae a cikin hasumiya tare da wasu sojoji da makamai da baka ko kuma sling. An kuma nuna amfani da ballista a cikin dabarun kewaye na Roman a cikin batun
Kewaye da Masada.