The Normans received the initial attack with some success , but , after a varying contest , they gave way before the impetuous Byzantine assault and fled .
On the 7 November the Byzantine army launched a sudden attack on the Normans and routed them .
The Normans received the initial attack with some success , but , after a varying contest , Normans gave way before the impetuous Byzantine assault and fled .
On the 7 November the Byzantine army launched a sudden attack on the Normans and routed them .