Seizing that moment, a party of camp followers run forward with a couple of planks, which they throw over the moat to make a temporary bridge. They are across in an instant, and place scaling-ladders against the walls. The knights, following close at their heels, mount rapidly, each man carrying his shield over his head, so that the bare ladder is converted into a covered stair, from whose shield-roof arrows glint and stones roll off innocuous. It is easy to see that a body of the enemy might thus, in a few minutes, effect a lodgment on the castle-wall, and open a way for the whole party of assailants into the interior.