I've been doing a campaign for a little while now, and am planning on a having the ship visit a feudal world at some point. (I.E. Whenever the Navigator happens to blow his Navigation tests badly). Since my guys haven't yet obtained any ground vehicles, and there's going to be factors in play to prevent them using aircraft too often, I was wondering what kind of rules could be used for traveling/combat on horseback.
For instance, I was thinking of giving some bonus damage when making a charge on horseback, or having horses become lamed after taking a certain amount of damage (possibly with a toughness test involved).