[X] Leave a garrison; it is now de facto Stirland, not just de jure.
-[X] Medium Garrison - 6k men, 20 cannon.
--[x] Have as many of our walking wounded as is feasible man the garrison, along with enough healers to keep healing them.
--[x] Have the garrison begin patching up the town's defenses, in case the worst occurs and we need a fallback point. Also burn or otherwise destroy the undead so its as hard as possible to use them again.