A Song Of Ice and Fire: Targaryen Dothraki Screamers
The warrior ways of the Dothraki might make them appear as simple barbarian savages, screaming into the sky as they charge into battle. And many commanders have underestimated them because of those stereotypes. A Dothraki will spend more time on their horse than they will off of it, and with that experience comes skill that regular training will never achieve. Despite being unarmored, it is still difficult for a trained swordsman to land a significant hit on a mounted Dothraki.