Last time I checked, horses didn\'t charge into a bristling wall of spears. So polearms have an effect on mounted opponents.
Also, if mounts are badly injured, they may throw their rider to the ground, which hurts, and then run off. Or they go mad with rage and start trampling everybdoy in the immediate vicinity to death.
I believe mounts have been discussed at an earlier point under a thread called \"Mounts,\" but still, carriages and chariots, among other things, can also be used for faster land transporation.