A council was immediately called, and Sir Walter Manny proposed a plan, which was instantly adopted.
In the meantime Sir Walter Manny, with 100 men-at-arms and 500 horse archers, issued by a sally-port on the other side of the town, and with all speed rode round to the rear of the French camp.
Sir Walter Manny with his party were therefore enabled to mount the walls unobserved and make their way into the town; here they fell upon the defenders in the rear, and the sudden onslaught spread confusion and terror among them.
The assailants, however, did not disarm, but after a sufficient time had elapsed to allow the garrison to lay aside their armour two strong parties attacked the principal gates of the town, while Sir Walter Manny and the Earl of Oxford moved round to the opposite side with ladders for an escalade. The plan was successful.