So passed the summer. The next winter the Lacedaemonians managed to elude the vigilance of the Athenians, and sent in a garrison of three hundred men to Epidaurus, under the command of Agesippidas. Upon this the Argives went to the Athenians and complained of their having allowed an enemy to pass by sea, in spite of the clause in the treaty by which the allies were not to allow an enemy to pass through their country. Unless, therefore, they now put the Messenians and Helots in Pylos to annoy the Lacedaemonians, they, the Argives, should consider that faith had not been kept with them. The Athenians were persuaded by Alcibiades to inscribe at the bottom of the Laconian pillar that the Lacedaemonians had not kept their oaths, and to convey the Helots at Cranii to Pylos to plunder the country; but for the rest they remained quiet as before. During this winter hostilities went on between the Argives and Epidaurians, without any pitched battle taking place, but only forays and ambuscades, in which the losses were small and fell now on one side and now on the other. At the close of the winter, towards the beginning of spring, the Argives went with scaling ladders to Epidaurus, expecting to find it left unguarded on account of the war and to be able to take it by assault, but returned unsuccessful. And the winter ended, and with it the thirteenth year of the war ended also.
In the middle of the next summer the Lacedaemonians, seeing the Epidaurians, their allies, in distress, and the rest of Peloponnese either in revolt or disaffected, concluded that it was high time for them to interfere if they wished to stop the progress of the evil, and accordingly with their full force, the Helots included, took the field against Argos, under the command of Agis, son of Archidamus, king of the Lacedaemonians. The Tegeans and the other Arcadian allies of Lacedaemon joined in the expedition. The allies from the rest of Peloponnese and from outside mustered at Phlius; the Boeotians with five thousand heavy infantry and as many light troops, and five hundred horse and the same number of dismounted troopers; the Corinthians with two thousand heavy infantry; the rest more or less as might happen; and the Phliasians with all their forces, the army being in their country.
The preparations of the Lacedaemonians from the first had been known to the Argives, who did not, however, take the field until the enemy was on his road to join the rest at Phlius. Reinforced by the Mantineans with their allies, and by three thousand Elean heavy infantry, they advanced and fell in with the Lacedaemonians at Methydrium in Arcadia. Each party took up its position upon a hill, and the Argives prepared to engage the Lacedaemonians while they were alone; but Agis eluded them by breaking up his camp in the night, and proceeded to join the rest of the allies at Phlius. The Argives discovering this at daybreak, marched first to Argos and then to the Nemean road, by which they expected the Lacedaemonians and their allies would come down. However, Agis, instead of taking this road as they expected, gave the Lacedaemonians, Arcadians, and Epidaurians their orders, and went along another difficult road, and descended into the plain of Argos. The Corinthians, Pellenians, and Phliasians marched by another steep road; while the Boeotians, Megarians, and Sicyonians had instructions to come down by the Nemean road where the Argives were posted, in order that, if the enemy advanced into the plain against the troops of Agis, they might fall upon his rear with their cavalry. These dispositions concluded, Agis invaded the plain and began to ravage Saminthus and other places.
Discovering this, the Argives came up from Nemea, day having now dawned. On their way they fell in with the troops of the Phliasians and Corinthians, and killed a few of the Phliasians and had perhaps a few more of their own men killed by the Corinthians. Meanwhile the Boeotians, Megarians, and Sicyonians, advancing upon Nemea according to their instructions, found the Argives no longer there, as they had gone down on seeing their property ravaged, and were now forming for battle, the Lacedaemonians imitating their example. The Argives were now completely surrounded; from the plain the Lacedaemonians and their allies shut them off from their city; above them were the Corinthians, Phliasians, and Pellenians; and on the side of Nemea the Boeotians, Sicyonians, and Megarians. Meanwhile their army was without cavalry, the Athenians alone among the allies not having yet arrived. Now the bulk of the Argives and their allies did not see the danger of their position, but thought that they could not have a fairer field, having intercepted the Lacedaemonians in their own country and close to the city. Two men, however, in the Argive army, Thrasylus, one of the five generals, and Alciphron, the Lacedaemonian proxenus, just as the armies were upon the point of engaging, went and held a parley with Agis and urged him not to bring on a battle, as the Argives were ready to refer to fair and equal arbitration whatever complaints the Lacedaemonians might have against them, and to make a treaty and live in peace in future.
The Argives who made these statements did so upon their own authority, not by order of the people, and Agis on his accepted their proposals, and without himself either consulting the majority, simply communicated the matter to a single individual, one of the high officers accompanying the expedition, and granted the Argives a truce for four months, in which to fulfil their promises; after which he immediately led off the army without giving any explanation to any of the other allies. The Lacedaemonians and allies followed their general out of respect for the law, but amongst themselves loudly blamed Agis for going away from so fair a field (the enemy being hemmed in on every side by infantry and cavalry) without having done anything worthy of their strength. Indeed this was by far the finest Hellenic army ever yet brought together; and it should have been seen while it was still united at Nemea, with the Lacedaemonians in full force, the Arcadians, Boeotians, Corinthians, Sicyonians, Pellenians, Phliasians and Megarians, and all these the flower of their respective populations, thinking themselves a match not merely for the Argive confederacy, but for another such added to it. The army thus retired blaming Agis, and returned every man to his home. The Argives however blamed still more loudly the persons who had concluded the truce without consulting the people, themselves thinking that they had let escape with the Lacedaemonians an opportunity such as they should never see again; as the struggle would have been under the walls of their city, and by the side of many and brave allies. On their return accordingly they began to stone Thrasylus in the bed of the Charadrus, where they try all military causes before entering the city. Thrasylus fled to the altar, and so saved his life; his property however they confiscated.
After this arrived a thousand Athenian heavy infantry and three hundred horse, under the command of Laches and Nicostratus; whom the Argives, being nevertheless loath to break the truce with the Lacedaemonians, begged to depart, and refused to bring before the people, to whom they had a communication to make, until compelled to do so by the entreaties of the Mantineans and Eleans, who were still at Argos. The Athenians, by the mouth of Alcibiades their ambassador there present, told the Argives and the allies that they had no right to make a truce at all without the consent of their fellow confederates, and now that the Athenians had arrived so opportunely the war ought to be resumed. These arguments proving successful with the allies, they immediately marched upon Orchomenos, all except the Argives, who, although they had consented like the rest, stayed behind at first, but eventually joined the others. They now all sat down and besieged Orchomenos, and made assaults upon it; one of their reasons for desiring to gain this place being that hostages from Arcadia had been lodged there by the Lacedaemonians. The Orchomenians, alarmed at the weakness of their wall and the numbers of the enemy, and at the risk they ran of perishing before relief arrived, capitulated upon condition of joining the league, of giving hostages of their own to the Mantineans, and giving up those lodged with them by the Lacedaemonians. Orchomenos thus secured, the allies now consulted as to which of the remaining places they should attack next. The Eleans were urgent for Lepreum; the Mantineans for Tegea; and the Argives and Athenians giving their support to the Mantineans, the Eleans went home in a rage at their not having voted for Lepreum; while the rest of the allies made ready at Mantinea for going against Tegea, which a party inside had arranged to put into their hands.
Meanwhile the Lacedaemonians, upon their return from Argos after concluding the four months’ truce, vehemently blamed Agis for not having subdued Argos, after an opportunity such as they thought they had never had before; for it was no easy matter to bring so many and so good allies together. But when the news arrived of the capture of Orchomenos, they became more angry than ever, and, departing from all precedent, in the heat of the moment had almost decided to raze his house, and to fine him ten thousand drachmae. Agis however entreated them to do none of these things, promising to atone for his fault by good service in the field, failing which they might then do to him whatever they pleased; and they accordingly abstained from razing his house or fining him as they had threatened to do, and now made a law, hitherto unknown at Lacedaemon, attaching to him ten Spartans as counsellors, without whose consent he should have no power to lead an army out of the city.
At this juncture arrived word from their friends in Tegea that, unless they speedily appeared, Tegea would go over from them to the Argives and their allies, if it had not gone over already. Upon this news a force marched out from Lacedaemon, of the Spartans and Helots and all their people, and that instantly and upon a scale never before witnessed. Advancing to Orestheum in Maenalia, they directed the Arcadians in their league to follow close after them to Tegea, and, going on themselves as far as Orestheum, from thence sent back the sixth part of the Spartans, consisting of the oldest and youngest men, to guard their homes, and with the rest of their army arrived at Tegea; where their Arcadian allies soon after joined them. Meanwhile they sent to Corinth, to the Boeotians, the Phocians, and Locrians, with orders to come up as quickly as possible to Mantinea. These had but short notice; and it was not easy except all together, and after waiting for each other, to pass through the enemy’s country, which lay right across and blocked up the line of communication. Nevertheless they made what haste they could. Meanwhile the Lacedaemonians with the Arcadian allies that had joined them, entered the territory of Mantinea, and encamping near the temple of Heracles began to plunder the country.
Here they were seen by the Argives and their allies, who immediately took up a strong and difficult position, and formed in order of battle. The Lacedaemonians at once advanced against them, and came on within a stone’s throw or javelin’s cast, when one of the older men, seeing the enemy’s position to be a strong one, hallooed to Agis that he was minded to cure one evil with another; meaning that he wished to make amends for his retreat, which had been so much blamed, from Argos, by his present untimely precipitation. Meanwhile Agis, whether in consequence of this halloo or of some sudden new idea of his own, quickly led back his army without engaging, and entering the Tegean territory, began to turn off into that of Mantinea the water about which the Mantineans and Tegeans are always fighting, on account of the extensive damage it does to whichever of the two countries it falls into. His object in this was to make the Argives and their allies come down from the hill, to resist the diversion of the water, as they would be sure to do when they knew of it, and thus to fight the battle in the plain. He accordingly stayed that day where he was, engaged in turning off the water. The Argives and their allies were at first amazed at the sudden retreat of the enemy after advancing so near, and did not know what to make of it; but when he had gone away and disappeared, without their having stirred to pursue him, they began anew to find fault with their generals, who had not only let the Lacedaemonians get off before, when they were so happily intercepted before Argos, but who now again allowed them to run away, without any one pursuing them, and to escape at their leisure while the Argive army was leisurely betrayed. The generals, half-stunned for the moment, afterwards led them down from the hill, and went forward and encamped in the plain, with the intention of attacking the enemy.
The next day the Argives and their allies formed in the order in which they meant to fight, if they chanced to encounter the enemy; and the Lacedaemonians returning from the water to their old encampment by the temple of Heracles, suddenly saw their adversaries close in front of them, all in complete order, and advanced from the hill. A shock like that of the present moment the Lacedaemonians do not ever remember to have experienced: there was scant time for preparation, as they instantly and hastily fell into their ranks, Agis, their king, directing everything, agreeably to the law. For when a king is in the field all commands proceed from him: he gives the word to the Polemarchs; they to the Lochages; these to the Pentecostyes; these again to the Enomotarchs, and these last to the Enomoties. In short all orders required pass in the same way and quickly reach the troops; as almost the whole Lacedaemonian army, save for a small part, consists of officers under officers, and the care of what is to be done falls upon many.