aces ' ▁heavy ▁inf antry ▁formed ▁in ▁deep ▁ranks ▁between ▁two ▁tren ches , ▁front ed ▁by ▁his ▁sk irm ish ers ▁and ▁fl ank ed ▁by ▁numerous ▁caval ry ▁beyond ▁the ▁tren ches . ▁ ▁The ▁Rom ans ▁deployed ▁the ▁XXX VI th ▁leg ion ▁on ▁the ▁right ▁wing , ▁the ▁force ▁of ▁former ▁leg ion aries ▁rec ru ited ▁from ▁the ▁Pont ic ▁colon ies ▁on ▁the ▁left ▁and ▁the ▁recently ▁lev ied ▁leg ions ▁in ▁the ▁center . ▁The ▁Roman ▁auxili aries ▁formed ▁the ▁advance ▁guard ▁and ▁what ▁little ▁caval ry ▁the ▁Rom ans ▁had ▁were ▁put ▁on ▁the ▁fl anks . ▁As ▁Ph arn aces ▁out number ed ▁the ▁Rom ans , ▁Cal vin us ▁spread ▁his ▁army ▁thin ▁in ▁order ▁to ▁match ▁Ph ar ances ' ▁deployment ▁and ▁avoid ▁being ▁out fl ank ed . ▁The ▁battle ▁began ▁poor ly ▁for ▁Cal vin us ▁as ▁his ▁lev ied ▁Pont ic ▁troops ▁fled ▁soon ▁after ▁the ▁on set ▁of ▁fighting . ▁With ▁a ▁large ▁segment ▁of ▁his ▁line ▁now ▁gone , ▁Cal vin us ▁could ▁not ▁assault ▁the ▁enemy ▁positions ▁with ▁any ▁hope ▁of ▁victory ▁and ▁had ▁little ▁option ▁but ▁to ▁retre at . ▁The ▁stead iness ▁of ▁the ▁XXX VI ▁leg ion ▁saving ▁him ▁from ▁complete ▁anni h ilation , ▁he ▁o vers aw ▁a ▁fighting ▁withdraw al . ▁Although ▁the ▁XXX VI ▁Leg ion ▁escaped ▁with ▁light ▁losses , ▁Cal vin us ▁had ▁lost ▁nearly ▁two ▁third s ▁of ▁his ▁army ▁by ▁the ▁time ▁he ▁had ▁fully