IMHO... hack damage is for melee, pierce for ranged, crush for siege. But I know Empires Ascendant enjoys using the scattershot approach.... so, why not... give it "crush" attack. lol
I wish we had a spawning feature. We could do something interesting with the military colony concept (perhaps they spawn free settler infantry or something).
"Argyraspides" indicates "Silver Shield." One might wonder why these guys don't have silver shields. There's no indication what this corps of men was actually called, so something more descriptive like "Romanized Swordsman," is just as good as anything else.