History of the Peloponnesian War

Taking post before Orchomenus, they all proceeded to besiege it and to make assaults, being especially desirous of getting possession of it because hostages from Arcadia were deposited there by the Lacedaemonians.

But the Orchomenians, fearing the weakness of the wall and the number of the enemy, and being apprehensive lest they might perish before relief came, capitulated on condition that they should be received as allies, should give hostages for themselves to the Mantineans, and should deliver up those whom the Lacedaemonians had deposited with them.