The Centurion and his horse questions.

[jkaler48]

I am leaning toward interpreting the scant evidence(so far) in this way:
Centurions in some senior positions, sick or wounded centurions not able to march long distances and older time served veteran Centurions would be mounted on the march.
Other centurions not.

Of course I will certainly reevaluate this interpretation based on additional evidence and further discussion as so should we all..