Would it be possible to have a bodyguard unit that could dismount before battle, like some of the cavalry in Medieval? I think thats the most realistic way.
Pertinax:
Here is a quote from Polybios histories (Book 3/65):Originally Posted by Pertinax
http://perseus.uchicago.edu/cgi-bin/...yout=&loc=3.65
The roman consul Publius Scipio led his cavalry personally in battle with Hannibals horsemen. 218 BC it`s hardly toward the end of the empire.
Here is another Polybios quote (Book 15/10) that shows Scipio Africanus using a cavalry bodyguard:
http://perseus.uchicago.edu/cgi-bin/...yout=&loc=15.6
Sarcasm has posted another example for republican generals fighting on horseback.
Bookmarks