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Armed Forces and Units

Achaemenid Immortals

Ancient

The Immortals were the elite standing infantry corps of the Achaemenid Persian Empire, so named by Greek writers because losses were replaced instantly to keep the unit's strength fixed at 10,000. Recruited from Persians, Medes and Elamites and equipped with the akinakes short sword, spear and wicker shield, the corps formed the royal guard and the core strike force of the Persian army under Cyrus the Great, Darius I and Xerxes I, including the invasion of Greece described by Herodotus. The corps' fate after the fall of the Achaemenid Empire to Alexander the Great in 330 BC is not recorded in the surviving sources. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Force Type
Elite standing heavy infantry corps of exactly 10,000 men, kept perpetually at full strength by immediately replacing any casualty or loss so the unit's numbers never visibly changed 1
Country
Achaemenid Persian Empire 1
Disputed
Founded Year
550 BCE 1
Sources date the corps' organization anywhere across Cyrus the Great's and Darius I's reigns; no single foundation year is attested directly.
Force Type
Force Type (category)
Guard 1
Connections

Fought In

Source Wikipedia: Immortals (Achaemenid Empire)
Sources
1. Wikipedia: Immortals (Achaemenid Empire)
Wikipedia
  • Formed the royal guard of the Achaemenid kings, per the entity's own sourced description.
  • Fought In: Greco-Persian Wars
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