1) Get your faction with unkempt defenders to 0 or higher. (this is an estimate, been a while since I've done the faction part)

2) Speak to Elaryness in Unkempt North (S), in the little village with houses in trees. This is the village you go to to check your wolf infections.

3) Collect 4 faerie dusts, they can drop from any kind of faerie. I had the best luck with wood faeries.

4) Go back to Elaryness and she will send you to her father's grave, which is in unkempt glade(N). The tombstone is connable and on a small island.

5) Go back to elaryness and she sends you to talk to Dresden. Dresden is on a hill SE from Elaryness.

6) Talk to Dresden and tell him you are ready. This will begin the war.

It requires a full size raid force to handle the war. There are 4 camps surrounding the hill that all spawn bad guys. You must split your crew into four forces, each capable of rapidly pulling and killing from their respective camps. The goal is to get the big named badguy from either side of the war to spawn, and defeat each of the big guys to stop the war. You must do this before Dresden or his men are killed by the unconnable enemies that slowly go up the hill and pick off the good guys. You have approximately one hour to do this.