History of the Peloponnesian War

The Argives, on finding this, marched, as soon as it was morning, to Argos first, and then to where they expected the Lacedaemonians with their allies would descend into their country, namely, the road running by Nemea.

Agis, however, did not take that road, as they expected him to do; but having given orders to the Lacedaemonians, Arcadians, and Epidaurians, he advanced by another and more difficult route, and so came down into the plain of Argos. The Corinthians, Pellenians, and Phliasians marched by another steep road; while the Boeotians, Megareans, and Sicyonians had been ordered to descend by that leading to Nemea, where the Argives were posted, in order that, if the Argives should advance into the plain against his own division, they might hang on their rear, and use their cavalry with effect.

He then, having made these arrangements and entered the plain, proceeded to ravage Saminthus and other places.

The Argives, having discovered it, advanced from Nemea, when it was now day, to their succour; and falling in with the forces of the Phliasians and Corinthians, killed a few of the former, but themselves had rather more killed by the latter.

And now the Boeotians, Megareans, and Sicyonians advanced, as they had been ordered, towards Nemea, and found the Argives no longer there; but they had gone down, on seing their property ravaged, and were forming for battle; while the Lacedaemonians also were preparing to meet them.