I have a few questions regarding the equipment used by the Achaemenian army. I've read up on this topic a bit and I find myself confused.
1. Did they use helmets? If so What kind? Infantry and cavalry.
2. Did achaemanid infantry, specifically immortals only use wicker shields or did they employ wood covered in bronze or other materials?
Here is a painting I found and it seems to portray infantry using painted shields. It doesn't show really whether it is wicker or not.
3. Is this an accurate portrayal of Achaemid heavy cavalry?
With the exception of the trousers this guy looks very greek, especially the helmet and shape of the armor. It resembles companion cavalry.