OK, so the title says it all. I'm sure we all have a fair idea on how Marian and then Imperial legionaries looked like, but where did you get the info for Camilian and Polybian. I'm more interested in Polybian (as I've only reached Polybian, without cheating that is). Were they described in some texts or was an "image" left?

I know I'm asking stupid questions, but I'd like to know where you get all your info from.

Thanks in advance.