This would be for a medieval/steampunk type tech level.
I have a set of soldiers in my book that I want to have wearing mirrored armor and I'm curious if that is at all explainable with real world application? Would it be possible to create armor with a mirror like substance? Or would it need to be simply steel or another metal just polished to the brights shine anyone has ever seen? Also, is it possible to have a mirrored surface like that that is strong and durable? i.e. won't shatter like a real mirror would when you hit it.
I want their armor to look like pretty traditional armor, but I will give them some interesting helmets and I want the surface to be like a literal mirror. I realize this might cause a problem for themselves as well so I've considered dressing them with some sort of fur draped over their shoulders to block any rays of light that might distract them.