Ka kammala wannan jumla: A Gaul, sansanin soja na Alesia ya kasance
a karkashin wani Roman kewaye a 52 BC, da kuma kewaye da Roman fortifications. Kamar yadda aka saba amfani da shi a lokacin, an saka "ballistae" a cikin hasumiya tare da wasu sojoji da makamai ko dai baka ko kuma harsashi.