Latest / The Achaemenid Empire: Persia's Golden Age of Power — Fexingo History / The Achaemenid Empire's Secret Weapon: The Persian Immortals
Transcript
- Lucas: So we've talked a lot about the Achaemenid kings and their court, but today I want to get into the people who actually guarded them on the battlefield. The elite soldiers who were never supposed to die. Luna: You mean the Immortals? The 10,000? Lucas: Exactly. The Greek sources called them the 'Immortals' — the Athanatoi — but that name might be a misunderstanding. And the whole story of how they operated is a mix of solid detail and wild legend. Let's start with what we actually know. Lucas: Herodotus is our main source, and he says they were a corps of exactly 10,000 men. Whenever one died or fell sick, he was immediately replaced, so the number never went down. That's why the Greeks called them 'Immortals' — but the term might have come from the Persian word 'anausha', which actually means something like 'without name' or 'unnamed'. Luna: So the name might be a mistranslation? Lucas: Possibly. Some scholars think Herodotus confused the word for 'immortal' with the word for 'unnamed' — because these soldiers may have deliberately not had individual names, for security reasons. But the replacement idea is real in some form. They were the king's personal guard, and they always had a full strength. Lucas: They carried a spear with a golden pomegranate at the butt end, while the rest of the army had silver ones. The pomegranate was a symbol of fertility and life — maybe that's why the Greeks saw them as invincible. They also had bows and arrows, and wore scale armor probably, maybe linen corselets. Their shields were wicker — light, but effective enough against arrows. Lucas: The Immortals were the core of the Achaemenid infantry. They were probably recruited from the best of the Persian and Median nobility. They were the ones who formed the royal bodyguard in peace and the main strike force in battle. At Marathon, Datis had them. At Thermopylae, Xerxes used them to try to break the Spartan line. Luna: Right, that's where they got destroyed, isn't it? Lucas: Well, that's the famous story. Herodotus says that after three days of fighting, the Immortals were sent in, and they were 'no more successful than the Medes', and they suffered heavy losses. Some modern historians doubt that — they think the Immortals probably weren't used in the frontal assault, or that the losses were exaggerated. But the legend stuck. Lucas: And at Gaugamela, they were positioned near Darius III, but they couldn't do much against Alexander's cavalry charge. But by then, the empire was already falling apart. The Immortals were the last line of defense — and they failed. Luna: So what did they actually do in peacetime? Were they just guards? Lucas: They were the king's household troops. They followed him everywhere, guarded the palace, and even managed the royal stables. Some of them were also officials, carrying messages or overseeing provincial matters. It was a real career path for Persian nobles. Lucas: We have some administrative tablets from Persepolis that mention groups of 1,000 soldiers, maybe these elite units. But the exact organization is fuzzy. We do know that the Immortals were divided into regiments of 1,000, each with its own commander. The whole corps was led by a chiliarch — one of the most powerful men in the empire. Lucas: But here's a really interesting bit — the Greek historian Ctesias, who actually worked as a physician at the Persian court, gave a different number. He said there were 10,000 Immortals, but he also mentioned that there were another 10,000 'apple-bearers' — the royal bodyguard who carried golden apples on their spears. That might be a separate unit, or it might be a confusion. Luna: So there might have been more than one elite unit? Lucas: Possibly. The Achaemenids had several tiers of guards. There were the 'apple-bearers', who were the king's personal bodyguards. Then there were the 'spear-bearers' or 'bow-bearers' — the Immortals might have been the main infantry, while the apple-bearers were even more elite. But the Greeks kind of lumped them together. Lucas: And we have archaeological evidence — reliefs at Persepolis and Susa show rows of soldiers with spears and bows, likely representing the Immortals. Their dress is distinctive: they wear a tiara or soft cap, and they carry that spear with the pomegranate. You can see them in the Apadana reliefs, marching up the stairs with gifts. Luna: I've seen those — they're all identical, right? Like clones. Lucas: That's a good observation. The reliefs show them in identical uniforms, which reinforces the idea of a unit that was uniform and interchangeable. It's almost like a visual metaphor for the Immortals' ethos — no individuals, just the unit. That might be exactly why the Greeks called them 'Immortals' — they seemed to be an unending, faceless force. Lucas: Now, there's a famous modern claim that the Immortals' name came from the Persian word 'anushiya', which means 'companion' or 'follower', not 'immortal'. That's from the Old Persian inscriptions. But that word might have referred to a different group, maybe the king's personal companions. So the whole thing is still debated. Luna: It's tricky when the main sources are Greek and they might not have understood the Persian terms. Lucas: Exactly. We rely on Herodotus, but he was writing for a Greek audience and he may have simplified things. But even if the name is off, the core idea — an elite unit that was always at full strength — seems to be real. And it made a huge impression on the Greeks. They saw them as the ultimate Persian warrior. Luna: I wonder if any Immortals survived the empire's fall. Lucas: Some might have. After Gaugamela, Bessus killed Darius III and tried to set himself up as king. He had some of the remaining royal troops with him, including maybe some Immortals. But Alexander eventually captured and executed him. After that, the elite units probably disbanded or were absorbed into the Hellenistic armies. There's no record of them as a distinct unit after that. Lucas: But their legacy lives on. The idea of an elite, undying guard influenced later empires — the Romans had their Praetorian Guard, the Byzantines had the Varangians. Even the French Foreign Legion has a similar mystique. But the Immortals were the first. Lucas: There's also a fascinating archaeological find from 2019 — a mass grave in Egypt with the remains of soldiers who might have been part of a Persian army, possibly including some Immortals. DNA analysis showed they were from different parts of the empire, not just Persians. That challenges the idea that the elite unit was all Persian. Luna: So they might have had Medes or Elamites too? Lucas: Right, and that makes sense. The Achaemenid Empire was multicultural, and the army drew from all its peoples. The Immortals might have been the best of the best, regardless of ethnicity. But they were still commanded by Persian nobles. Lucas: So when we picture the Immortals, we should think of them not as a monolithic Persian horde, but as a diverse, professional force that was the backbone of the empire's military. And their story is a window into how the Achaemenids maintained control over such a vast territory. Luna: It's amazing how much we can piece together from scattered sources and carvings. Lucas: And that's the beauty of studying the Achaemenids — we have to combine Greek texts, Persian inscriptions, and archaeology to get a picture. The Immortals are a perfect example: part myth, part reality, and all fascinating.