Latest / The Achaemenid Empire: Persia's Golden Age of Power — Fexingo History / Mardonius: The Persian General Who Almost Won Greece
Transcript
- Lucas: So we've talked a lot about Xerxes and Salamis, but I've always thought one of the most fascinating figures in the whole Greco-Persian Wars is someone who gets a bit overshadowed — Mardonius. Luna: Wasn't he the general who took over after Xerxes went back to Persia? Lucas: Exactly. He was Xerxes' cousin, son of Gobryas, one of Darius's top co-conspirators. And he was already a seasoned commander before the big invasion. Herodotus tells us he led a campaign into Thrace and Macedonia around 492 BCE — that was the first attempt to secure the northern route into Greece. But it ended disastrously, with a storm wrecking his fleet off Mount Athos. Luna: So he had a rough start. Lucas: Right. And that failure probably contributed to his push for a more careful strategy later. But the really interesting part comes after Salamis. Xerxes panicked — he thought the Greeks would sail north and destroy his bridge at the Hellespont, cutting off his retreat. So he bolted back to Sardis with most of the army. But he left Mardonius in charge of the best troops — perhaps 80,000 to 100,000 men — to winter in Thessaly and try again next spring. Luna: That's a huge gamble. Leaving your best general behind with half the army. Lucas: It was. And Mardonius actually had a solid plan. He tried to use diplomacy — he sent Alexander I of Macedon to Athens offering peace and alliance, hoping to split the Greek coalition. The Athenians refused, but it shows he understood the political game. Then in 479, he marched south, reoccupied Athens after the Athenians evacuated, and sent another peace offer. Again rejected. Luna: What was his military strategy after that? Lucas: He pulled back to Boeotia, near Plataea, where the terrain favored his cavalry. He built a fortified camp, dug a ditch, and waited for the Greek army to come to him. The Greek coalition under the Spartan regent Pausanias was huge — maybe 40,000 hoplites plus light troops. But Mardonius had the advantage in cavalry and open ground. Luna: So why didn't he win? Lucas: A lot of little things. The standoff lasted about two weeks, with skirmishes and supply problems on both sides. The Greeks had trouble getting water, and their supply lines through the passes of Mount Cithaeron were vulnerable. Mardonius actually managed to disrupt their food convoys a couple of times. But then — according to Herodotus — the Greek commanders decided to withdraw at night to a better position. The withdrawal was chaotic, units got separated, and Mardonius saw an opening. He launched a full assault, thinking the Greeks were retreating in disorder. Luna: And that's when everything fell apart for him. Lucas: Yes. But it wasn't a rout. The Spartans and Tegeans held their ground, and there was a brutal hoplite battle. Mardonius himself led from the front — he was on a white horse with his elite guard of a thousand picked men. At some point he was killed, and the Persian line collapsed. Without their commander, the army disintegrated. Most of the survivors fled to the fortified camp, but the Greeks stormed it and massacred them. It was a total defeat. Luna: So his death was the turning point. If he'd survived, maybe it would have been different. Lucas: Absolutely. And here's the thing — Mardonius had almost won. The Greek coalition was fractious, the Spartans were reluctant to fight far from home, the Athenians were suspicious. If he'd been more patient, or if his cavalry had prevented the Greek withdrawal from becoming a mess, or if he hadn't charged in person… the whole history of the West might have changed. But he did charge, and he died. Luna: It reminds me of something you said about Cyrus — that personal bravery could also be a liability for a commander. Lucas: Exactly. And that's the paradox at the heart of Achaemenid military culture. The king and his generals were expected to lead from the front, to show courage. But that courage could get them killed, and without them the army often collapsed. The Immortals, the elite guard, were trained to fight to the death around their commander. At Plataea, the Spartans targeted Mardonius specifically — they knew if he fell, the rest would break. Luna: What happened to his body afterward? Lucas: Herodotus says that Pausanias refused to have it mutilated — a deliberate contrast to how Xerxes had treated the fallen Spartans at Thermopylae. He ordered it buried with honor. But there's also a later tradition, mentioned by Plutarch and others, that Mardonius' head was cut off and displayed, or that his body was somehow mistreated. Hard to know what's true, but the idea of a respectful burial fits the Greek narrative of civilized victors. Luna: So Mardonius is really the what-if of the Persian Wars. Lucas: He is. And you know, thinking about that — I'm reminded of how much of what we do here depends on people being curious about exactly these kinds of what-ifs and forgotten stories. We don't run ads — it's just a small group of listeners who chip in through buy me a coffee dot com slash fexingo that makes this possible. And it's because of that support that we can dig into figures like Mardonius for an entire episode. Luna: Yeah, it's a real labor of love. And I think that's why the conversations feel so natural — because we're not trying to sell anything. Lucas: Exactly. So back to Mardonius — one more thing that struck me. He was also a key figure in the Ionian Revolt, earlier. He was the one who actually deposed the Greek tyrants in Ionia and set up democracies. That was a shrewd political move: remove the unpopular puppet rulers, win over the Greek cities with self-government. It almost worked, until the revolt spiraled into something bigger. Luna: So he was both a soldier and a diplomat. That's a rare combination. Lucas: Very rare. And it makes you wonder: if he'd lived, would the Persians have found a way to integrate Greece into the empire the way they did with Babylon or Egypt? He understood the need to accommodate local customs. But instead, he died on a Boeotian plain, and the Persian dream of conquering Greece died with him. Luna: It's almost tragic, in a way. He was so close. Lucas: That's why I wanted to do an episode on him. He's not the hero or the villain — he's a human being trying to hold together an empire, making risky decisions, and ultimately paying the price. And that's the kind of story that sticks with you.