Ascairm means 'the one who see', it's like a sort of vigilant. There are thousands of them in the towers and walls of Aldar. They can became heavy infantery in few minutes, to defend the walls. They are trained and have a large gaze. They can see a rabbit in his hole at one kilometer afar. Some of them are sended to Khalorg, where the elven armies train them in this large gaze. So they are the most trained warriors of the realm.