Immortals (Persian elite force)

The Immortals were an elite military unit of ancient Persia, specifically under the Achaemenid Empire during the 5th century BCE. Known for their striking, uniform appearance, they were made up of 10,000 soldiers who were so named because whenever one was killed or injured, he was immediately replaced to maintain their numbers. This elite force was highly organized and played a crucial role in battles, showcasing the strength of the Persian military. The Immortals symbolized the power of the Persian Empire and were feared by many of their foes for their skill and discipline.