Mounted battle

From Wormhole Sci-Fi MUD Homepage

You can ride vehicles and some animals. You do this using the MOUNT command. While riding a creature or vehicle you can also fight, but those without the 'Mounted Battle' skill will often find that they are knocked off. Those 'unhorsed' during melee combat lose any bonuses they derive from their mount (and leave it behind if they move, or recall).

The skill is automatically used, when appropriate; no commands are necessary.