Setting the scene
By 490 BCE, the Persian Empire under Darius I controlled the largest empire in history, stretching from India to Thrace. In 499 BCE, Greek cities in Ionia (western Anatolia) revolted against Persian rule, and Athens and Eretria sent aid. The Persians crushed the revolt by 494 BCE and Darius sought revenge against Athens. In 490 BCE, he sent an expeditionary force—perhaps 25,000 men—across the Aegean, sacking Eretria and landing at Marathon, 26 miles from Athens, intending to punish the city.
What happened
The Athenians, led by Miltiades, marched out with about 10,000 hoplites (heavy infantry), joined by 1,000 Plataeans. They blocked the Persians at Marathon for five days. On September 12, 490 BCE, seeing the Persian cavalry absent (possibly re-embarking), Miltiades attacked. The Greeks advanced at a run to minimize exposure to Persian arrows, with strong wings and weak center. The Greek center gave way but the wings enveloped the Persians, routing them. The Persians fled to their ships, losing 6,400 men to Greek losses of 192. A runner, Pheidippides, supposedly ran to Athens with news of victory, dying after delivering his message—origin of the marathon race.
Why it still matters
The Battle of Marathon was a stunning victory of citizen-soldiers over a professional empire, saving Greek independence and, by extension, Western civilization—had Persia won, Greek culture might have been suppressed. Marathon boosted Athenian confidence, leading to its Golden Age and democracy. It demonstrated the superiority of heavy infantry in close combat and the power of civic militias. Marathon became a legend in Western culture, symbolizing the triumph of freedom over despotism (though this is oversimplified). The battle also marked the beginning of the Greco-Persian Wars, which would continue until 479 BCE. Marathon remains a powerful symbol of endurance and democratic resistance.
Background
The Battle of Marathon took place in 490 BC during the first Persian invasion of Greece. It was fought between the citizens of Athens, aided by Plataea, and a Persian force commanded by Datis and Artaphernes. The battle was the culmination of the first attempt by Persia under King Darius I to subjugate Greece. The Greek army inflicted a crushing defeat on the more numerous Persians, marking a turning point in the Greco-Persian Wars. The victory became a symbol of Greek resistance to Persian expansion.