Hi,
They are base for FOG but I would use them for many rules FOG, Hail Caesar, Imptvs or just about anything else that they fit in. I'm not 100% set to one rule system yet, although my club play mainly FOG. I have even looked at Kings of War historical as guys play the fantasy rules alot.
Here is some more eye candy, another Persian cavalry unit and some casualty markers I made up from left over figures.
Enjoy