Athenian Force Under Cimon Marches to Ithome

The Athenian Assembly did not move armies lightly. But Cimon—aristocrat, victor, and friend of Sparta—made the case. Plutarch puts it plainly: “Cimon made his country’s increase of less account than Sparta’s interest, and persuaded the people to go forth to her aid with many hoplites” [3]. Behind the rhetoric stood a calculus: aid Sparta now to keep the Peloponnesian League stable and Persian ambitions checked.

The force that mustered beneath the Acropolis carried the city’s prestige into Laconia. Hoplites buckled on bronze greaves; scarlet plumes nodded over polished helmets as ranks formed along the Long Walls. The march traced a familiar strategic corridor: west along the Saronic Gulf, over the Isthmus by Corinth, past the markets of Argos, and down into the Eurotas valley. Each waystation—Megara’s gates, Corinth’s harbors, Amyclae’s shrines—heard the steady clank of Athenian kit.

Thucydides’ account is terse on numbers but rich on motive. Sparta wanted Athenian siege expertise; Athens sent it [1]. In practical terms, that meant carpenters, rope‑makers, and veterans of wall‑building—men who could sight a catapult bed on a slope and judge where to drive a trench. To the Spartans watching from the Eurotas bank, it must have felt like welcoming a different military species: one that thought in angles, levers, and patience rather than phalanx shock alone.

Cimon himself mattered. As the force threaded through the Peloponnese, his reputation preceded it. He had argued publicly that Athens and Sparta were twin pillars against Persia, and he wore his philolaconian stance openly. That personal brand calmed some Spartan nerves. If any Athenian could be trusted in Laconia, it was the man who prized Spartan friendship as a strategic asset [3].

Once in theater near the Messenian border, the Athenians began the slow work Ithome required. They felled pines, hewed spars, and assembled rams under canvas awnings. The siege’s sound shifted: not just the barked cadence of hoplites drilling, but the creak of oar‑timbers repurposed for towers, the thud of mallets, the rasp of saws biting green wood. On clear days, you could see the azure strip of the Messenian Gulf beyond fields of olive and thorn—and the granite knot of Ithome ignoring it all.

Yet the longer the Athenians worked below the mountain, the louder a different cadence sounded in Spartan ears. Thucydides would nail it to the page: Athenians are “enterprising and revolutionary” [1]. Perioikic towns near Sellasia and Thuria saw Athenian officers coordinating patrols and staging equipment. To conservative Spartans, ingenuity could look like infiltration. The very qualities that made the Athenians useful at sieges made them troubling houseguests.

Operationally, the joint effort probed Ithome’s defenses. Athenian engineers tested retaining walls with rams; hoplites escorted sappers up goat paths; supply lines from the Eurotas hummed with carts and pack animals. But it became clear that no quick storming was coming. The rebels had chosen well. Pausanias’ insistence on their Messenian core rings true when you watch how they used the mountain with ancestral familiarity [4].

By the campaign’s midpoint, tension outweighed solidarity. Cimon’s men had done what was asked, and their presence had bought Sparta options. It had also forced an un-Spartan intimacy: reliance on a rival’s brains and brawn inside Laconia. That intimacy, Cimon would soon learn, had limits measured not in rations or rope but in trust.