The Centurion and his horse questions.

[Matt Lukes]

older time served veteran Centurions would be mounted on the march.

If you're referring to my first quote John, you have it backwards- in that situation clearly it was a special case where he was given a horse to go scouting a new location for the army's encampment and because it was a speical case suggested on a march maybe he wouldn't have been riding. It's tricky since he'd just arrived at the army's position and the 'mission' was a setup to kill him so he didn't actually get to go anywhere with the army LOL