Izgoy-1

Fortress of Hope - the first book of the fantasy cycle cycle Outlaw.

Centuries have passed since the monstrous wars of the magicians died down and half of the continent turned into an ash-stained wasteland uninhabitable. The once magnificent cities now lie in ruins, inhabited by monsters and undead so dangerous that they had to erect a border wall in order to protect civilians from a mortal threat.
So the Wild Lands appeared ...

A small detachment led by Baron Coris van Isere, exiled to a permanent settlement in the Wild Land, which in fact is only a delay in the death penalty - the Empire, ruled by the iron hand of an aging king, gets rid of the objectionable. The settlers have only one task - to survive at any cost, to all and all in spite of.