Robert defeated Roger at the Battle of Nocera on 24 July .
Roger burnt Aversa and , by 1134 , forced Ranulf , count of Alife , and the nominally Byzantine Duke Sergius VII of Naples to submit .
Robert defeated Roger at the Battle of Nocera on 24 July , but Roger burnt Aversa and , by 1134 , forced Ranulf , count of Alife , and the nominally Byzantine Duke Sergius VII of Naples to submit .