The Lord of the Rings: Shadow of the East
The senior kingdom of the three formed after the division of Arnor. Technically, since T.A. 1349, its Kings have claimed to be the rulers of Arnor reunited. In T.A. 1643, the Cardolani principalities of Girithlin and Tyrn Hódath support that claim, but their administrations remain separate from those of the Arthedain. Consequently, the kingdom is bounded in this fashion: on the east, the Weather Hills and the farthest line of the North Downs; on the north, the Rammas Forod and the Talath Muil; on the west, the middle stretch of the River Lhûn and, south of that, the Tower Hills and the foothills of the southern Blue Mountains; on the south, the Baranduin from its last bend before the sea up to the Bridge of Stonebows on the Great East Road, and thence following roughly along the Road to the Base of Weathertop. The Arthedain claim Dúneriador, the rough land between the Lhûn and the northern Blue Mountains, but they do little to enforce it. An ancient protectorate over the Northern Wastes as far as the Bay of Forochel is also little-enforced.
The symbol of Arthedain is a circle of seven stars, some variation of which is part of the colors of virtually all the soldiers serving in the kingdom. Royal troops wear black armor with a black surcoat.