My great-grandfather was a cavalryman. He was able to ride suspended along one side of the horse, so as to appear to potential spectating enemies as a lone wild horse riding in the distance. He could also throw a grenade a very long distance (in fact, the longest in his battalion, if that's the right word). Of course, he was not shooting a bow, but accuracy was a must. I'm no horse-rider, I'm one of the city folk. But from the familial history I know, I'm sure horse-rider bond plays a factor in the military performance of the cavalryman. How large or small of a factor that bond is, I do not know.