https://fr.pinterest.com/siresasa/dipylon-and-boeotian-shields/

other question, what are the ideas/houghts behind the unreleased minor factions? i got the idea that they are all meant to serve a niche and benefit different factions needs, an had a thought about three in particular. like the volvagians being a heavy unit, fire damage niche, the subrosians maybe good defensives builds or farming stone/metal like the ridge's niche, or the huskus being a budget swarm niche/anti-swarm/gohma niche because of lore? just curious is all

That's because templates have inheritance. So you are only validating a bit of the chain rather than the final template. Hence the errors.

@wowgetoffyourcellphone Thanks, that's really helpful! I'll check out those maps 

That wouldn't have been necessary :P. Certainly they knew about Late Bronze Age armour because of oral traditions, the Iliad was written around 700 BC, yet gets many things right from 1200 BC (like boar's tusk helmets), while also committing anachronisms (funeral pyres). I've also read that these ("Boeotian") shields could have been kept by some families as heirlooms.