Thucydides Daily Reader

Day 144 of 506 Book 2, Chapter 8 April 17, 2026
28% through the History

Today's Passage

This passage describes Athenian military operations in northwestern Greece during winter 429-428 BCE, the third year of the Peloponnesian War.

Crawley Translation (1910)

In the course of this winter, after the dispersion of the Peloponnesian fleet, the Athenians in Naupactus, under Phormio, coasted along to Astacus and disembarked, and marched into the interior of Acarnania with four hundred Athenian heavy infantry and four hundred Messenians. After expelling some suspected persons from Stratus, Coronta, and other places, and restoring Cynes, son of Theolytus, to Coronta, they returned to their ships, deciding that it was impossible in the winter season to march against Oeniadae, a place which, unlike the rest of Acarnania, had been always hostile to them; for the river Achelous flowing from Mount Pindus through Dolopia and the country of the Agraeans and Amphilochians and the plain of Acarnania, past the town of Stratus in the upper part of its course, forms lakes where it falls into the sea round Oeniadae, and thus makes it impracticable for an army in winter by reason of the water. Opposite to Oeniadae lie most of the islands called Echinades, so close to the mouths of the Achelous that that powerful stream is constantly forming deposits against them, and has already joined some of the islands to the continent, and seems likely in no long while to do the same with the rest. For the current is strong, deep, and turbid, and the islands are so thick together that they serve to imprison the alluvial deposit and prevent its dispersing, lying, as they do, not in one line, but irregularly, so as to leave no direct passage for the water into the open sea. The islands in question are uninhabited and of no great size. There is also a story that Alcmaeon, son of Amphiraus, during his wanderings after the murder of his mother was bidden by Apollo to inhabit this spot, through an oracle which intimated that he would have no release from his terrors until he should find a country to dwell in which had not been seen by the sun, or existed as land at the time he slew his mother; all else being to him polluted ground. Perplexed at this, the story goes on to say, he at last observed this deposit of the Achelous, and considered that a place sufficient to support life upon, might have been thrown up during the long interval that had elapsed since the death of his mother and the beginning of his wanderings. Settling, therefore, in the district round Oeniadae, he founded a dominion, and left the country its name from his son Acarnan. Such is the story we have received concerning Alcmaeon.

The Athenians and Phormio putting back from Acarnania and arriving at Naupactus, sailed home to Athens in the spring, taking with them the ships that they had captured, and such of the prisoners made in the late actions as were freemen; who were exchanged, man for man. And so ended this winter, and the third year of this war, of which Thucydides was the historian.

Modern Translation

During that winter, after the Peloponnesian fleet had dispersed, the Athenian forces stationed at Naupactus under Phormio's command sailed along the coast to Astacus. They disembarked and marched inland into Acarnania with four hundred Athenian hoplites and four hundred Messenians. They expelled individuals suspected of disloyalty from Stratus, Coronta, and other towns, and restored Cynes, son of Theolytus, to power in Coronta. They then returned to their ships, having concluded that winter conditions made it impossible to campaign against Oeniadae—a city that, unlike the rest of Acarnania, had consistently opposed Athens. The river Achelous, which flows from Mount Pindus through Dolopia and the territories of the Agraeans and Amphilochians before crossing the Acarnanian plain past Stratus, creates extensive marshlands where it meets the sea near Oeniadae, rendering military operations impractical during winter due to flooding. Across from Oeniadae lie most of the Echinades islands, positioned so close to the Achelous delta that this mighty river continuously deposits sediment around them. Several islands have already merged with the mainland, and others will likely follow soon. The current runs strong, deep, and laden with silt, while the islands cluster so densely and irregularly that they trap the sediment, preventing it from dispersing into open water and blocking any direct channel to the sea. These islands remain uninhabited and relatively small. Legend tells that Alcmaeon, son of Amphiaraus, came here during his exile after killing his mother. Apollo's oracle had commanded him to find land that didn't exist—hadn't been touched by sunlight—when he committed matricide, as all existing land was polluted for him. After much wandering in confusion, he noticed the Achelous deposits and reasoned that sufficient new land might have formed during his years of exile since his mother's death. He settled in the region around Oeniadae, established his rule, and the territory took its name, Acarnania, from his son Acarnan. This is the tradition we've inherited about Alcmaeon. The Athenians and Phormio sailed back from Acarnania to Naupactus and returned to Athens in spring, bringing the captured ships and those prisoners who were free citizens. These were exchanged one-for-one. Thus concluded this winter and the third year of the war that Thucydides has recorded.

Historical Context

This passage describes Athenian military operations in northwestern Greece during winter 429-428 BCE, the third year of the Peloponnesian War. The admiral Phormio, commanding from the strategic base at Naupactus, conducts a limited campaign in Acarnania to secure Athenian influence. The expedition involves installing pro-Athenian leaders and removing potential enemies, typical of Athens' imperial management. The geographical description of the Achelous River and its impact on military logistics demonstrates Thucydides' attention to how terrain shapes strategy. The inclusion of the Alcmaeon myth reflects Greek understanding of landscape formation through religious tradition. This relatively minor operation illustrates Athens' need to maintain control over allied territories even during winter months, when major campaigns were typically suspended.

Key Themes

Annotations & References

Phormio's Naval Command

Phormio was one of Athens' most successful admirals, known for his victories in the Gulf of Corinth. His base at Naupactus controlled the entrance to the gulf, giving Athens strategic dominance over western Greek waters. This expedition shows how naval commanders also conducted land operations to maintain regional control.

Learn more →

Acarnanian Geography

Acarnania, in northwestern Greece, was strategically important for controlling sea routes to Italy and Sicily. The Achelous River, Greece's largest by volume, created challenging terrain that influenced military operations. Thucydides' detailed geographical description reflects ancient Greek interest in how physical environment shaped human affairs.

Learn more →

The Alcmaeon Myth

Alcmaeon killed his mother Eriphyle to avenge his father Amphiaraus. The myth of finding 'new land' untouched by the sun when the murder occurred reflects Greek concepts of pollution (miasma) and purification. Thucydides includes this aetiological myth to explain the region's name while showing contemporary geographical understanding.

Learn more →

Winter Campaigns

Ancient Greek warfare typically paused during winter due to weather, agricultural cycles, and logistical challenges. This expedition represents unusual winter activity, likely necessary to maintain Athenian influence. The failure to attack Oeniadae due to flooding illustrates typical seasonal constraints on ancient military operations.

Learn more →

Parallel Ancient Sources

Pausanias: Description of Greece (8.24.8-10)

Pausanias provides another version of the Alcmaeon story and his settlement in Acarnania, offering additional details about the oracle and the formation of new land by the Achelous River.

Read passage →

Strabo: Geography (10.2.18-21)

Strabo describes the Achelous River delta and the Echinades islands in detail, confirming Thucydides' account of ongoing land formation and providing additional geographical information about the region.

Read passage →

Xenophon: Hellenica (4.6.1-2)

Xenophon describes later Athenian operations in Acarnania, showing the continued strategic importance of the region and Athens' efforts to maintain influence there throughout the classical period.

Read passage →

Discussion Questions

  1. How does Thucydides' inclusion of the Alcmaeon myth alongside geographical description reflect different ways Greeks understood landscape formation?
  2. What does this winter expedition reveal about the challenges of maintaining imperial control over distant territories?
  3. How does the geographical description of the Achelous River delta demonstrate the influence of physical environment on military strategy?
  4. Why might Thucydides end Book 2 with this relatively minor operation rather than a major battle or political event?