Came across this today:
https://m.yenisafak.com/en/news/ancient-relief-depicting-greek-persian-war-unearthed-in-nw-turkey-3578495
Very interesting - can;t make much out in the photos, though!
I know. I was disappointed about that too.
I have tried playing with the levels of the photo to get greater contrast. I may be kidding myself, but I think the right hand horse at least has a leg and torso of a rider, and possibly a shield visible under the horses centre-left...
crikey, I've tried and tried but I am struggling to make much out at all...
It does look more like a procession than a battle scene - we need more high quality photos to study in detail to be clear.
If the evidence is this single panel in the photographs, then I am somewhat sceptical of the excavators' assertion that it depicts Graeco-Persian conflict; there just does not seem enough there to say that. Even if there is a body or two (with or without my guess at a possible shield) under the horses' hooves, bit of an assumption to say the fallen are Greeks...