The Centurion and his horse questions.

[Magnus]

First, do we know centurions rode at all? What gave you that impression?

If they did, then yes, they have a servant that took care of most of their needs. That would include any equine matters.

If they did have a mount, it would likely be kept at camp, or with the rest of the baggage train.

But those are big IF's...do you have a reference that piqued your interest? In my meager readings I haven't encountered any mention of the centurions doing anything but marching alongside the regulars. It's easier to whip them with their vitis that way.