First, congratulations on winning the fortress battle. It is a location of vital importance. Second, stop congratulating yourself on winning the battle--it is one of many.
Since you seemed so keen on capturing this particular fortress, I'm putting you in charge of defensive preparations. Better to tackle one problem at a time rather than wait for them to pile up.
That's where you come in. Clear out any Defense Hecklers in the area. Bring me back Burnt Ash once you've completed your task. Simple enough. Move!