Warrior Culture : Persian Empire
Subculture : The Immortals
The unit dubbed “The Immortals” was more closely translated into “The Companions” was a specialized unit within the Persian Empires. Called “Immortal” by their enemies due to the practice of immediately replacing the injured, slain, and even the sick in order to maintain an even 10,000. They acted as both an Imperial Guard and the Persians standing army, bolstering the tribal levies of the Empire and providing an incentive for those tribes to send troops (as tribes who did not would inevitably face the Immortals in battle).
While unlikely to be as they were depicted in popular historical adaptations such as the 300 and 300 rise of and empire I have included these pictures as they are astheticly pleasing and that they keep with the tradition of an imposing mythically immortal unit. Seeing as the common people would not neccisarily understand that the soldiers were not the same ones who died in the previous battle, instead of actual immortals.