Londigul Ellic the Armorer tells you, "We've driven the Viamontians out of town and back to where they have their blockades setup. Travel down any of the roads leading out of town to find the blockades and kill the invaders you find in that area. If you can kill twenty of the invaders I'll make you a member of the Glenden Wood Militia. Once you've proven you can fight we have more that you may be able to help us with."