Editing 426 BC (section)

== Events ==
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=== By place ===
==== Greece ====
* The [[Athens|Athenian]] leader [[Cleon]] and Athenian general [[Demosthenes (general)|Demosthenes]] revitalise the city's military and naval forces despite opposition from [[Nicias]], a rich merchant and soldier, and his supporters.
* Demosthenes unsuccessfully besieges the [[Corinth]]ian colony of [[Leukas]]. As a result, he does not return to Athens, fearing for his life. However when, later in the year, [[Ambracia]] invades [[Acarnania]], and the Acarnanians seek help from Demosthenes, who is patrolling the [[Ionian Sea]] coast with twenty Athenian ships, he reaches the Athenian naval base in the [[Gulf of Corinth]] at [[Naupactus]] and secures it just in time to defend it against a large Spartan army from [[Delphi]] under [[Eurylochus (Spartan general)|Eurylochus]] which has come to assist the Ambraciots. Demosthenes defeats the Spartan army and Eurylochus is killed during the [[Battle of Olpae]]. The Acarnanians and Ambraciots then sign a peace treaty.
* An Athenian army under Nicias, [[Hipponicus]] and [[Eurymedon (strategos)|Eurymedon]] defeats a combined [[Tanagra]]n and [[Thebes, Greece|Theban]] army in the [[Battle of Tanagra (426 BC)|Battle of Tanagra]].
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