Sparta was thrown into consternation by the news of this defeat. Her population that in Lycurgus’ time numbered nine thousand was reduced in the year of the battle of Platæa to five thousand, which in another quarter of a century had dwindled to seven hundred; hence she could not support the loss of the men now held under siege by the Athenians. The ephors went in person to Pylos to examine the condition of affairs and saw no other way to preserve the lives of their fellow-citizens than to conclude an armistice with the Athenian generals. It was agreed that Laconia should send ambassadors to Athens, and that she should immediately surrender all the vessels, sixty galleys, that she had in the port of Pylos; Athens to continue the blockade of Sphacteria but allowing to pass in daily, two Attic phœnices of flour, two cotyles of wine, and a portion of meat per soldier, with half that allowance for the menials.
The Lacedæmonian deputies appeared in the assembly at Athens and, contrary to their usual custom, delivered a long discourse offering peace in exchange for the Spartan prisoners and adding that the treaty once made, all other cities would follow their example and lay down arms. Where now were all the causes of complaint held against Athens at the commencement of the war? The Spartans deserted their allies and the cause they had formerly held so just for the sake of some fellow-citizens in danger. But had they not also the preceding year betrayed the Ambracians after the defeat at Olpæ? Unfortunately Pericles was no longer there to urge upon the people a prudent generosity. Cleon exhorted the assembly to demand the restitution of the towns ceded when the Thirty Years’ Truce was concluded, and the deputies, unable to accept such terms, retired without having accomplished anything.
The armistice ceased with their return; but the Athenians, pretending the violation of certain conditions, refused to give up the Spartan vessels, which was an entirely gratuitous breach of faith since the ships were no longer of any use to the Spartans. Famine was the greatest danger the besieged had to fear; the island, thickly wooded as it was, offering peril to the enemy that would attempt to take it by force. Freedom was promised each helot who would carry provisions through the blockade, and many attempting and succeeding, the four hundred and twenty were enabled to hold out till the approach of winter.
The Athenians at Pylos had also to fear for themselves the difficulty of obtaining provisions through the severe season. The army already suffered, and this fact became known at Athens. Cleon, who had rejected the overtures of the Lacedæmonians, laid the blame on the generals. It was because of their lack of resolution, he said, that hostilities were so prolonged. In this he was right, the Athenians at Pylos numbering ten thousand men as against four hundred and twenty Spartans. Nicias, in a constant state of alarm, believed success even with their superior force impossible, and to silence the demagogue proposed to him to go himself to Sphacteria.
Cleon hesitated, but the impatient people took the general at his word, and Cleon was obliged to go; promising that in twenty days all trouble would be at an end. In truth this was time enough to effect his purpose when he once seriously set to work. He first prudently requested that Demosthenes co-operate with him, and was wise enough to take counsel of this able man at every step. Shortly after his arrival at Pylos a fire lighted on Sphacteria to cook food and imperfectly extinguished, was fanned by a violent wind into a blaze that destroyed the whole forest. This accident removed the principal obstacle in the way of an attack. Demosthenes made the preparations aided by Cleon, and one night they fell upon the island with their entire force. Having among their troops many that were lightly armed, they were able to reach the highest points and from there sorely harass the Lacedæmonians who were unused to the methods of attack of an enemy that uttered wild cries and fled as soon as they had struck. The ashes of the recently consumed forest rose into the air and blinded the besieged men, and unable longer to distinguish objects they stood motionless in one place and received from every side projectiles that their felt cuirasses were ill-fitted to turn aside. To render the combat a little less unequal they retired in a body to an elevated fort at the extremity of the island. This position gave them a decided advantage, and they were beginning to repulse their assailants when there appeared upon the rocks above them a corps of Messenians who had outflanked them.