Then in that case he must do his own archeaological research to prove him wrong and publish his findings.
Unforthunatly we are not allowed to post Osprey illustrations in TWC to see that in eveery bit of texture there is a referebce image behind it.
Visit HellenicArmors and see that our ellite units use the armors (under writen lisence by their creator ONLY for TGC) for our ellite Roman warriors , captains and generals.
We trust more renown historians mr R.D.Ammato is an exelent greek language connoisseur able to translate every middle ages texts and extract every detail from them.
I guess your friend does not see shields full of Saints and Viking shields from early mods and that bothers him. But when TGC started we made a promise to provide the best historical accuracy we can (FliegerAD is a historical that writes articles in history magaisnes and he was responsible for the Imperium Romanum aka HRE preview). We could not doupt his knowlege because we may did not like some features. History is history. We could easily create clones units like Roman scutatoi with swords and every other imaginary aspect. For Bulgarians Roster Bulgarian historians were responsible , for Norse and Rus Absinthia that had the knowlege and so on.
EDIT:
My friend despite the constant discussion of Rus were Norse or Slavs take a look in our preview and please point us out any major mistakes we made.