While playing the Bulgarians in the Medieval Era, while at War with AI persona CoolOMGaCool who was playing the Huns, I used my diplomatic ability to create a demilitarized zone in a territory that I owned that currently had an active battle.  The battle immediately was ended, and that turn or the next I noticed that my AI combatant who was playing the Huns was getting his at-peace-derived War Score bonus of +2 per turn War Support for being under a WS of 80...even though we were still At War.


Screen capture attached.