Reading: The Persian Wars

Christopher Brooks

Persia was one of the most significant ancient civilizations, a vast empire that was at the time the largest the world had ever seen. It incorporated all of the ancient civilizations of the Middle East, and at its height it even included Egypt. In other words, the entire expanse of land stretching from the borders of India to Greece, including nearly all of the cultures described in the chapters above, were all conquered and controlled by the Persians.

Persia itself corresponds with present-day Iran (the language of Iran today, Farsi, is a direct linguistic descendent of ancient Persian). Most of its landmass is an arid plateau crossed by mountain ranges. In the ancient world, it was dominated by warriors on horseback who were generally perceived as “barbarians” by the settled people of Mesopotamia to the west. By the seventh century BCE, a powerful collection of clans, the Medes, dominated Persia, forming a loosely-governed empire. In turn, the Medes ruled over a closely-related set of clans known as the Persians, who would go on to rule territories far beyond the Iranian heartland.

Historians divide Persian history into periods defined by the founding clan of a given royal dynasty. The empire described in this chapter is referred to as the Achaemenid Persian Empire after its first ruling clan. Later periods of ancient Persian history, most importantly the Parthian and Sasanian empires, are described in the chapters on ancient Rome.

Persian Expansion

The Medes were allies of Babylon, and in 612 BCE they took part in the huge rebellion that resulted in the downfall of the Assyrian Empire. For just over fifty years, the Medes continued to dominate the Iranian plateau. Then, in 550 BCE a Persian leader, Cyrus II the Great, led the Persians against the Medes and conquered them (practically speaking, there was little distinction between the two groups since they were so closely related and similar; the Greeks regularly confused the two when writing about them). He assimilated the Medes into his own military force and then embarked on an incredible campaign of conquest that lasted twenty years, forging Persia into a gigantic empire.

Cyrus began his conquests by invading Anatolia in 546 BCE, conquering the kingdom of Lydia in the process. His principal further west were the Greek colonies of Ionia, along the coast of the Aegean Sea. Cyrus swiftly defeated the Greek poleis, but instead of punishing the Greeks for opposing him he allowed them to keep their language, religion, and culture, simply insisting they give him loyal warriors and offer tribute. He found Greek leaders willing to work with the Persians and he appointed them as governors of the colonies. Thus, even though they had been beaten, most of the Greeks in the colonies did not experience Persian rule as particularly oppressive.

Cyrus next turned south and conquered the city-states and kingdoms of Mesopotamia, culminating with his conquest of Babylon in 539 BCE. This conquest was surprisingly peaceful; Babylon was torn between the priests of Marduk (the patron deity of the city) and the king, who was trying to favor the worship of a different goddess. After he defeated the forces of the king in one battle, Cyrus was welcomed as a liberator by the Babylonians and he made a point of venerating Marduk to help ensure their ongoing loyalty.

Cyrus continued the practice of finding loyal leaders and treating his conquered enemies fairly, which kept uprisings against him to a minimum. He then pushed into Central Asia, in present-day Afghanistan, conquering all of what constituted the “known world” in that region. To the northeast were the steppes, home of a steppe-dwelling nomadic people called the Scythians, whom the Persians would go on to fight for centuries (Cyrus himself died in battle against the Scythians in 530 BCE – he was 70 years old at the time).

Cyrus was followed by his son Cambyses II. Cambyses led the Persian armies west, conquering both the rich Phoenician cities of the eastern Mediterranean coast and Egypt. He was installed as pharaoh in Egypt, again demonstrating Persian respect for local traditions. Thus, in less than thirty years, Persia had gone from an obscure kingdom in the middle of the Iranian plateau to the largest land empire in the entire world, bigger even than China (under the Eastern Zhou dynasty) at the time. Cambyses died not long after, in 522 BCE, under somewhat mysterious circumstances – he supposedly fell on his sword while getting off of his horse.

In 522, following Cambyses’ death, Darius I became king (r. 521 – 486 BCE). Darius came to power after leading a conspiracy that may have assassinated Cambyses’ younger brother Bardiya, who had briefly ruled. In the midst of the political chaos at the top, a series of revolts briefly shook the empire, but Darius swiftly crushed the uprisings and reasserted Persian rule. He captured his moment of triumph in a huge carved image on a rock wall (the “Bisitun Inscription”) which depicts his victory over lesser kings and traces his royal lineage back to a shared ancestor with Cyrus the Great.

By the time Darius came to power, the Persian Empire was already too large to rule effectively; it was bigger than any empire in the world to date but there was no infrastructure or government sufficient to rule it consistently. Darius worked to change that. He expanded the empire further and, more importantly, consolidated royal power. He improved infrastructure, established a postal service, and standardized weights, measures, and coinage. He set up a uniform bureaucracy and system of rule over the entire empire to standardize taxation and make it clear what was expected of the subject areas.


The Persian Empire at its territorial height under Darius I.

Darius inherited the conquests of his predecessors, and he personally oversaw the conquest of the northern part of the Indus river valley in northwestern India, thus marking the first time in world history when one state ruled over three of the major river systems of ancient history (i.e. the Nile, Mesopotamia, and the Indus). In 513 BCE he led a gigantic invasion of Central Asia to try to end the raids of the Scythians once and for all; he was forced to retreat without winning a decisive victory, but his army was still intact and he had added Thrace (present-day Bulgaria) to the empire.

Darius was also interested in seizing more territory to the west, conquering the remaining Greek colonies on the coast of Anatolia. In 499 BCE several Ionian Greek poleis rose against the Persians and successfully secured Athenian aid. Several years of fighting followed, with the Persians eventually crushing the rebellion in 494 BCE (the Persians deported many of the Greek rebels to India as punishment). Athens’ decision to support the rebellion angered the Persians, however, and Darius began to plan a full-fledged invasion of Greece.

The Persian War

When the Greek cities of Ionia rose up against Persian rule, Darius vowed to make an example not just of them, but of the Greek poleis that had aided them, including Athens. This led to the Persian War, one of the most famous conflicts in ancient history. It is remembered in part because it pitted an underdog, Greece, against a massive empire, Persia. It is remembered because the underdog won, at least initially. It is also remembered, unfortunately, for how the conflict was appropriated by proto-racist beliefs in the superiority of “The West.” Because the Greeks saw the conflict in terms of the triumph of true, Greek, civilization over barbaric tyranny, and the surviving historical sources are told exclusively from the Greek perspective, this bias has managed to last down until the present – consider the recent movie adaptations of the most famous battles of the Persian War, 300 and 300: Rise of an Empire, in which the Persians are depicted as being literally monstrous, ruled over by a comically evil, eight-foot-tall king. The fact that both Sparta and Athens were slave-based societies is not part of those movies’ narratives.

The war began in 490 BCE, when the Persians, with about 25,000 men, landed at Marathon, a town 26 miles from Athens. The Athenians sent a renowned runner, Pheidippides, to Sparta (about 140 miles from Athens) to ask for help. The Spartans agreed, but said that they could only send reinforcements when their religious ceremonies were completed in a few days. Pheidippides ran back to Athens with the bad news, but by then the Athenians were already engaged with the Persians.

There were about 25,000 Persian troops – this was an “expeditionary force,” not a large army, against which the Athenians fielded 10,000 hoplites. The Athenians marched out to confront the Persians. The two armies camped out and watched each other for a few days, then the Persians dispatched about 10,000 of their troops in naval transports to attack Athens directly; this prompted a gamble on the part of the leading Athenian general (named Miltiades) to attack the remaining Persians, rather than running back to Athens to defend it. The ensuing battle was a decisive show of force for the Greeks: the citizen-soldier hoplites proved far more effective than the conscript infantry of the Persian forces. The core of the Persian army, its Median and Persian cavalry, fought effectively against the Athenians, but once the Athenian wings closed in and forced back the infantry, the Persians were routed.

The Greeks were especially good at inflicting casualties without taking very many – the Persians supposedly lost 33 men to every Athenian lost in the battle (6,400 Persian dead to 192 Athenians). There is also a questionable statistic from Greek sources that it was more than that – as many as 60 Persians per Athenian. Whatever the real number, it was a crushing victory for the Athenians. A later (almost certainly fabricated) account of the aftermath of the battle claimed that Pheidippides was then sent back to Athens, still running, to report the victory. He dropped dead of exhaustion, but in the process he ran the first “marathon.”

It is entirely possible that, despite this victory, the Greeks would have still been overwhelmed by the Persians if not for setbacks in Persia and its empire. A major revolt broke out in Egypt against Persian rule, drawing attention away from Greece until the revolt was put down. Likewise, it took years to fully “activate” the Persian military machine; preparation for a full-scale invasion took a full decade to reach completion. Darius died in 486 BCE, in the middle of the preparations, which disrupted them further while his son Xerxes consolidated his power.

In the meantime, the Greeks were well aware that the Persians would eventually return. A new Athenian general, Themistocles, convinced his countrymen to spend the proceeds of a silver mine they had discovered on a navy. Athens went into a naval-building frenzy, ending up with hundreds of warships called triremes, rowed by those free Athenians too poor to afford armor and weapons and serve as hoplites, but who now had an opportunity to directly aid in battle as sailors. This was perhaps the first time in world history that a fairly minor power transformed itself into a major power simply by having the foresight to build an effective navy.

The Persians had finally regrouped by 480 BCE, ten years after their first attempt to invade. Xerxes I, the new king, dispatched a huge army (as many as 200,000 soldiers and 1,200 ships) against Greece, supported by a navy over twice as large as that of the Athenians. The Greek poleis were, for the most part, terrified into submission, with only about 6% of the Greek cities joining into the defensive coalition created by Athens and Sparta (that being said, within that 6% were some of the most powerful poleis in Greece). The Spartans took leadership of the land army that would block the Persians in the north while the Athenians attacked the Persian navy in the south.


Route of the Persian invasion under Xerxes.

The Spartan-led force was very small compared to the Persian army, but for several days they held the Persians back at the Battle of Thermopylae, a narrow pass in which the Persians were unable to deploy the full might of their (much larger) army against the Greeks. The Spartan king, Leonidas, and his troops held the Persian forces in place until the Spartans were betrayed by a Greek hired by the Persians into revealing a path that allowed the Persians to surround the Greeks and, finally, overwhelm them. Despite the ultimate defeat of the Spartan force, this delay gave the Athenians enough time to get their navy into position, and they crushed the Persian navy in a single day.

Despite the Persian naval loss, Xerxes’ army was easily able to march across Greece and ransack various poleis and farmlands; it even sacked Athens itself, which had been evacuated earlier. Xerxes then personally withdrew along with a significant portion of his army, while claiming victory over the Greeks. Here, simple logistics were the issue: the Greek naval victory made supply of the whole Persian army impractical.

The next year, in 479 BCE, a decisive battle was fought in central Greece by a Greek coalition led by the Spartans, followed by a Greek naval battle led by the Athenians. The latter then led an invasion of Ionia that defeated the Persian army. Each time the Greeks were victorious, and the Persians finally decided to abandon the attempt to conquer Greece as being too costly. The remaining Greek colonies in Anatolia rose up against the Persians, and sporadic fighting continued for almost 20 years.

While there is obviously a pro-Greek bias to the Greek sources that describe the Persian War, they do identify an essential reason for Greek victories: thanks to the viability of the phalanx, each Greek soldier (from any polis, not just Sparta) was a real, viable soldier. The immense majority of the Persian forces were relatively ineffective peasant conscripts, unwillingly recruited from their homes and forced to fight for a king for whom they had little personal loyalty. The core of the Persian army were excellent cavalry from the Iranian plateau and Bactria (present-day Afghanistan), but those were always a small minority of the total force.

479 BCE was the end of the Persian war and the beginning of the “classical age” of Greece, the period during which the Greeks exhibited the most remarkable flowering of their ideas and accomplishments, as well as perhaps their most selfish and misguided political blunders in the form of a costly and ultimately pointless war between Sparta and Athens: the Peloponnesian War.

Image Citations (Wikimedia Commons):

Map of Persia – Sumerophile

Persian invasion – GNU Free Documentation License

This chapter has been derived with minor modifications from Chapter 5: Persia and the Greek Wars in Western Civilization: A Concise History.


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