The Battle of Coronea in 394 BC, also Battle of Coroneia, took place during the Corinthian War, in which the Spartans and their allies under King Agesilaus II defeated a force of Thebans and Argives that was attempting to block their march back into the Peloponnese. It ranks among the deadliest of the Hoplite battles, despite its comparative obscurity, when matched up against more famous battles like the Battle of Delium in 424, and the Battle of Mantinea in 362.