Earlier in verse 18 we had the people wondering if any could stand before Shiz. Now that Coriantumr has blunted the most devasting aspect of his army, that of the devastation of the local populations (accomplished by moving the local populations away from danger, as in verse 15), Shiz is no longer as feared. Indeed, now it is Coriantumr’s army that is having devastating effect on the army of Shiz. Shiz is backed up against the seashore, but he escapes to the land of Corihor. Along the way, the same tactics of destruction are used. The local populations either forcibly join, or are eliminated.