Hell yes and not just roman Celts, Saxon, Carthaginian, Huns, Goths, Vandals, Franks, Burgundians and Lombards and others from that era. Note that most if not all of early people used BRONZE not steel as armor and weapons the early roman armor and swords etc.. would be a lot weaker compared to barbarian weapons and armor( what little armor they used though) that used iron and steel. But would still be week compared to armor already in the game