sentences:  Determined to find a way through, Brutus and Cassius managed to make Norbanus leave this dominating position, but Norbanus discovered the trap in time to recover it.When Brutus and Cassius managed to outflank them, Norbanus and Saxa retreated towards Amphipolis.When Marcus Antonius and the bulk of the triumvirs' troops arrived, they found Amphipolis well-guarded and Norbanus was left in command of the town.