History of the Peloponnesian War

But the Athenians sallied out against them with all their citizens, and a thousand Argives, and the several contingents of the other allies. amounting in all to fourteen thousand.

They marched against them because they thought they were at a loss how to effect a passage, and in some measure also from a suspicion of the democracy being put down.

The Athenians were also joined, in accordance with the treaty, by a thousand horse of the Thessalians, who went over during the action to the Lacedaemonians.

A battle having been fought at Tanagra in Boeotia, the Lacedaemonians and their allies were victorious, and there was much bloodshed on both sides.