In 480 BCE an army marched into Greece under the command of the Persian king Xerxes. His goal was to conquer Greece and make it part of the Persian Empire. In an unprecedented act of cooperation, many of the Greek poleis set aside their differences and formed a coalition to resist the Persian advance. An army of allies, under the command of the Spartan king Leonidas, took up position at Thermopylae, a natural choke point on a narrow coastal plain.

Leonidas was not the only Spartan king in the action. Demaratus, a former king of Sparta who had been exiled by his people, was with the Persians as an adviser to Xerxes. As the army approached the pass at Thermopylae, Xerxes consulted Demaratus about what his forces were about to face. According to Herodotus, the two kings discussed the Spartans. Xerxes compared his massive army with the small population of Sparta and was incredulous that the Spartans would dare to stand against him. Demaratus assured him that they would do so: “Their master is the law, whom they revere far more than your subjects revere you. They will do what it commands, and it always commands the same: not to flee, whatever the numbers, but to remain in their ranks and to triumph or be destroyed.” Xerxes remained unconvinced.

Once the battle began at Thermopylae, Demaratus was proven right. The Greeks held their defensive position and the narrow pass prevented the Persians from bringing their superior numbers to bear. The stalemate dragged on until the Persians finally learned of a mountain track that allowed them to send a contingent to attack the Greek position from behind. Leonidas ordered most of the allied forces to withdraw, but the Spartans, Thespians, and Thebans remained behind and fought to the last man. Surveying the battlefield in the aftermath, Xerxes admitted that Demaratus had been right.

The Battle of Thermopylae has come down in legend as one of the great clashes between East and West. Framed by the conversations between Xerxes and Demaratus, it has been interpreted as a test of Western democracy against Eastern tyranny. Since the only thing more romantic than a victory is a noble defeat, Leonidas has been celebrated in forms ranging from ancient hero cult to Hollywood film.

Like most heroic legends, however, Thermopylae becomes more complicated the closer we look at it. Thermopylae was a battle, not a morality play, and the choices of both sides were dictated more by practicality than ideology. Xerxes’ large army required supplies brought across the Aegean by ship, but the Mediterranean is stormy in winter and the Persians could not risk going hungry because of a shipwrecked supply fleet. A swift conquest, before winter came, was therefore crucial to Persian strategy. The Greeks knew they could not expect the army at Thermopylae to hold the Persian forces back indefinitely. Their mission was not to die nobly but to slow down Xerxes’ advance enough to strain his supply lines and make a swift conquest impossible. When the Persians turned the Greek flank, the Greeks withdrew. Those who stayed behind may have been intended only as a covering force who would withdraw last, but they ran out of time. Despite Demaratus’ assertions to Xerxes, Spartans had been known to withdraw in the face of overwhelming forces before. If Leonidas did in fact intend to fight to the death, he had strategic reasons for doing so besides romantic heroism. The greatest danger to the Greeks was always that their alliance would fall apart over old rivalries. The Athenians in particular, whose fleet was vital, were suspicious of Sparta’s commitment to the cause. By fighting to the last, the Spartans demonstrated their resolve and helped keep the alliance intact. The events at Thermopylae reflect the realities of ancient warfare, not a test of national character.

The conversations between Xerxes and Demaratus in Herodotus’ account also mean rather less than some have made them out to. Like most such dialogues in ancient histories, they were probably pure invention. Herodotus, proud of his fellow Greeks for their resistance to Xerxes, used these exchanges to make a point, but his argument is less sweeping than a cosmic opposition between democratic Greeks and despotic Persians. First of all, Demaratus is  explicit that his praise applies only to Spartans, not all Greeks. Second, it is not freedom or democracy that Demaratus points to, but self-control. The unspoken contrast is not to Persians as a culture but to Xerxes himself, whose capricious character Herodotus explored elsewhere in detail. The trouble with the Persians was not that they had a king but that they had a bad one, and bad rulers were not unique to Persia; Greeks had had plenty of their own.

The wars between Greece and Persia in the early fifth century have been hailed as the defining clash between East and West and the spark that lit the torch of Western civilization. While the events of the war were important in the history of ancient Greece, the reality is that Greece and Persia were not so starkly opposed as many have made them out to be. Greeks and Persians had much in common, and the history of their interactions turned more on the practicalities of politics and diplomacy than on ideology. The war was a painful and complicated event that provoked many different responses, but it was no clash of civilizations.

The Greco-Persian Wars in Western History

Western scholarship up to the latter half of the twentieth century was unabashedly pro-Greek and anti-Persian. The nineteenth-century German historian Barthold Niebuhr spoke for many of his peers when he wrote: “a Persian man has never been a free and proud man. . . . At the same time the Persians are exceptionally cruel. . . . The orientals are an evil and morally corrupt people through and through.” Niebuhr’s English contemporary Sir Edward Creasey began his 1851 history The Fifteen Decisive Battles of the World with the battle between a Persian expeditionary force and the Athenians at Marathon in 490 and left no doubt as to how he judged the significance of the event: “on the result of [the Greek generals’] deliberations depended not merely the fate of two armies, but the whole future progress of human civilization.” Even a century later in the 1950s, it was regarded as no more than a banal truism to state that “In 480–79 the Greeks saved themselves and the future of European civilization from Oriental conquest.”

The idea of the Greco-Persian Wars as a conflict between two radically opposed forces has lingered on in more modern scholarship but has come to be expressed in cultural rather than racial terms. One book from 1996 still described some Persian troops as “Stone Age savages” and celebrated the Greek victory as one that “continue[s] to irradiate and quicken our whole western heritage.” Books on the Battle of Salamis, from 2004, and Marathon, from 2010, both argued that the outcome saved Western civilization.

A different approach to Greece and Persia has developed with the rise of postcolonial studies. Some scholars have shifted the focus to the Persian perspective and have explained the failure of Persia’s campaigns in Greece less as the product of Greek heroism and more as the result of poor strategic planning on the Persians’ part. Others have ousted the wars from the center of Greco-Persian interactions and traced a long-term pattern of trade, accommodation, and cultural interchange in which the invasions of mainland Greece were only a brief interruption. Greek attitudes toward Persia have been examined more fully and found to be far more nuanced and multifaceted than was long assumed.

Understanding the Greco-Persian Wars requires setting aside nineteenth-century assumptions about “Oriental” races and twentieth-century arguments about Western civilization to see both the Persians and the Greeks on their own terms.


The Persian Empire arose in the context of another empire’s fall. In the tenth century BCE the old northern Mesopotamian kingdom of Assyria began to build an empire using innovative techniques of siege warfare. Walled towns that might have held out for months or years against earlier armies fell to the Assyrians’ towers and battering rams in a matter of days. Supported by its army’s expertise in capturing cities, the Assyrian Empire expanded faster and farther than any state in the region had done before, ultimately stretching from the edge of the Iranian plateau to the Nile valley.

The Assyrians faced new challenges as their army was stretched thin by its rapid conquests. To suppress rebellion, they massacred, enslaved, or forcibly resettled many conquered peoples and destroyed rebellious cities. Assyrian cruelty was a calculated political strategy, and though effective in the short term, it sowed resentment among its victims. When the empire was weakened by civil war in the late seventh century BCE, an alliance of its subjects and neighbors banded together to overthrow it. A few generations later, with the memory of Assyrian oppression still fresh, the Persians began to build a new empire.

The Persians first appear in history as nomads in the southern Iranian plateau at the fringes of Assyrian power. They allied themselves with another Iranian people, the Medes, who lived to their north. Both the Medes and the Persians were part of the anti-Assyrian coalition. In 550 BCE the Persian king Cyrus began a campaign of expansion and ultimately built an empire larger than any the world had seen before. Persian territory stretched from the Indus River in the east to Egypt and Anatolia in the west. Cyrus and his descendants, the Achaemenid dynasty, ruled over this empire for the next three centuries.

In a deliberate contrast to the Assyrians, the Persians adopted a policy of tolerance toward the peoples they ruled. Slavery was forbidden by Persian custom, and though they did not end slaveholding among their subjects, they took no slaves of their own. They never massacred a conquered people and only forcibly resettled the most persistent troublemakers. In fact, the Persians helped some displaced people—notably the Jews—return home and rebuild.

Local cultures were allowed to thrive. The Persians did not impose their customs, language, or laws on their subjects. The only demands they made were the payment of taxes and provision of soldiers for the army. In return, the Persians guaranteed peace and stability, and they supported trade through the construction of roads and the issuing of a common currency. The empire was organized into provinces ruled by governors, called satraps, who had a degree of local autonomy but were accountable to the king for the orderly administration of their territories. At a more local level, the Persians generally left peoples with their own native rulers, so long as those rulers did not support rebellion. Achaemenid royal art, such as the stairway of the ceremonial palace at Persepolis and the tombs cut into cliff faces nearby, shows the king surrounded by subjects of many different ethnicities in their own native garb, rendered in a style that combined elements from the artistic traditions of many different peoples. For the Persians, multiculturalism was both a virtue and a pragmatic policy.

Persians and Greeks

No empire has ever been created without violence. The Persian Empire is no exception. Most of the peoples over whom the Persians ruled were, most of the time, content with the arrangement and prospered from it, but some parts of the empire resisted Persian rule and threatened the stability of their satrapies. The northwestern frontier was a persistent trouble spot for the empire. The conquests of Cyrus had brought the kingdom of Lydia, in western Anatolia, into the empire in 546. Not long before, around 560, the Lydians had conquered the Ionian Greek cities on the Aegean coast. These cities now came under Persian control.

Like most other Greek poleis of the time, the Ionian cities in Anatolia had a variety of constitutions, but most allowed some degree of democratic participation. Democracy is by its nature messy and unpredictable. As practiced in ancient Greece, it was also prone to outbreaks of factional violence. Although it was the Persians’ custom to leave local politics alone, they needed a measure of stability on their frontier. They therefore supported the rise of local aristocrats who ruled the Ionian cities as pro-Persian tyrants.

The opponents of these tyrants found shelter across the Aegean in the cities of mainland Greece, especially Athens, which had strong historical ties to the Ionians. Agitation against the tyrants continued until 499 when many of the Ionian cities rose up in revolt. Athens and some other mainland Greek cities committed warships to the cause. The Athenians had their own troubled history with Persia, which helped draw them into the revolt. The former tyrant of Athens, Hippias, had fled to Persia when he was driven out of the city in 510 and had been trying for some time to engineer a return with Persian backing. Having forced out Hippias, the Athenians went through a series of internal conflicts, ending with the establishment of a democratic constitution. When Sparta tried to intervene and help some pro-Spartan aristocrats regain power, the Athenians went so far as to offer submission to Persia in return for protection. After the Spartan threat had passed, however, the Athenians wanted neither Persian rule nor the return of Hippias. Driving the Persians back from the Aegean coast must have seemed a prudent step toward avoiding both.

The Ionian revolt had some initial success, including capturing and burning down the satrapal capital at Sardis, but in the end the rebellion was a failure. Most of the Ionian cities accepted their old tyrants back on the promise that no harm would come to them. The only city to suffer reprisals was Miletus, where the revolt had begun and which held out until recaptured by force. The population of the city was forcibly resettled at the mouth of the Tigris River. The Persians’ uncharacteristically harsh treatment of the Milesians shows how vexing this frontier problem had become.

The Persians continued to try to pacify their Aegean frontier through diplomacy and targeted strikes against foreign agitators such as Athens. In 491 King Darius sent envoys to many cities on the Greek mainland and islands asking for earth and water, the traditional symbols of submission to Persia. Many cities, remembering what happened to Miletus, acquiesced. The next year, Darius sent a naval expedition across the sea against Athens and some of the other cities who persisted in resistance. Hippias, now an old man, was brought along in the hopes that he could rally local supporters and seize control of the city, but that support never materialized. After a long standoff, some of the Persian forces were defeated in battle with the Athenian army at Marathon. The rest tried to sail around Attica and attack the undefended city, but the Athenian troops raced overland in time to draw up outside the city walls as the Persian ships came into view. The Persians withdrew to Ionia.

In 486 Darius was succeeded by his son Xerxes, who decided that after some sixty years of trying to manage the Aegean frontier, the time had come to conquer and incorporate the territory. In 480, apart from the delaying action at Thermopylae, Persian forces marched largely unopposed into Greece. Most Athenians abandoned their city and fell back to the fleet. In the straits between the island of Salamis and the Attic coast the allied Greek fleet won a major battle against the Persian navy and changed the strategic calculus. Without naval superiority, the Persians could no longer count on keeping their army supplied by ship. Xerxes withdrew with most of his army, leaving a small force under his general Mardonius to overwinter in Thessaly and continue the campaign the next year. The following summer the Greeks assembled the largest army they could muster and defeated Mardonius’ troops at Plataea. Following up on the victory, the Greek forces expelled Persian garrisons from many of the cities they had occupied in their march.

Once the Persians had been driven out of Europe, Sparta withdrew its forces from the alliance. Athens instead took the lead and organized a new alliance, known as the Delian League, with the avowed purpose of carrying on the fight to liberate the Greek cities in Ionia and defend them from Persian interference. The Ionian cities seized the opportunity to rebel against Persia again and joined up with the new league. Athenian-led forces won a decisive victory against the Persians at Eurymedon in 466 that secured Athenian dominance over the Aegean for decades.


  1. An excellent article which has enabled me to make sense of all the disparate information which I have recently been trying to take in for my university classics course. Thank you.


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