Find Private Hendel in Dustwallow Marsh.
Private Hendel is to the west of here. He's currently on guard duty protecting some of Theramore's infiltrators while they rest. They've been keeping tabs on the Horde base, Brackenwall, and looking for anything else that might threaten our borders.
You should have no problem finding him; just look for the tents along the road.
I have another matter to attend to, but I shall catch up to you soon enough. You can always find me in the Lady Proudmoore's tower if you have any problems.