Persian Sassanid to in heavy armour, precursor of the European knights of the Middle Ages. The Sassanids were Zoroastrians like their predecessors' the Achaemenids and the Parthians, who ruled Iran from 500 BC to 600 AD.
Ulfberht Sword- viking sword made with forged steel. High carbon blade made this a very strong and durable weapon. See UTube or Netflix for 1 hour doc on how a modern day blacksmith recreated the sword using ancient techniques- way cool.