▁west wards ▁sub du ing ▁tribes ▁and ▁capt uring ▁opp ida ▁as ▁he ▁went , ▁going ▁at ▁least ▁as ▁far ▁as ▁Ex eter , ▁which ▁became ▁a ▁base ▁for ▁Leg . ▁II ▁August a ▁from ▁ 5 5 ▁till ▁ 7 5 . ▁Leg io ▁IX ▁His p ana ▁was ▁sent ▁north ▁towards ▁Lincoln ▁() ▁and ▁by ▁ 4 7 ▁it ▁is ▁likely ▁that ▁an ▁area ▁south ▁of ▁a ▁line ▁from ▁the ▁H umber ▁to ▁the ▁Se vern ▁Est u ary ▁was ▁under ▁Roman ▁control . ▁That ▁this ▁line ▁is ▁followed ▁by ▁the ▁Roman ▁road ▁of ▁the ▁F os se ▁Way ▁has ▁led ▁many ▁histor ians ▁to ▁debate ▁the ▁route ' s ▁role ▁as ▁a ▁convenient ▁front ier ▁during ▁the ▁early ▁occupation . ▁It ▁is ▁more ▁likely ▁that ▁the ▁border ▁between ▁Roman ▁and ▁Iron ▁Age ▁Britain ▁was ▁less ▁direct ▁and ▁more ▁mutable ▁during ▁this ▁period . ▁ ▁Late ▁in ▁ 4 7 ▁the ▁new ▁governor ▁of ▁Britain , ▁Pub lius ▁Ost or ius ▁Sc ap ula , ▁began ▁a ▁campaign ▁against ▁the ▁tribes ▁of ▁modern - day ▁Wales , ▁and ▁the ▁Ch esh ire ▁G ap . ▁The ▁Sil ures ▁of ▁sout heast ▁Wales ▁caused ▁considerable ▁problems ▁to ▁Ost or ius ▁and ▁fier c ely ▁def ended ▁the ▁Wel sh ▁border ▁country . ▁Car ata cus ▁himself ▁was ▁defeated ▁in ▁the ▁Battle ▁of ▁Ca er ▁Car ad oc ▁and ▁fled ▁to ▁the ▁Roman ▁client ▁tribe ▁of ▁the ▁Brig antes ▁who ▁occupied ▁the ▁P enn ines . ▁Their ▁queen , ▁Cart im and ua