Ungol

The nomadic tribes of Northern Kislev often provide the Tzar's military with outstanding light cavalry: the Kislevite Horse Archers.

Description
Horse Archers are fierce mounted nomads from teh plains of Kislev. They come from the Ungol tribe, primarily, but also include Sibyrians and mounted Cossacks.

Sources:

 * Warhammer Armies: The Empire (1992)
 * Warhammer Armies: Kislev (White Dwarf)
 * Kislev, the Claws of the Great Bear, Pt. 2, by Tuomas Pironen. Citadel Journal, Issue XX pp. 23-39