Pelopidas and his friends, who had arrived in the city disguised as hunters, now entered the banquet-room in the long white veils and festive garb of women. They were loudly welcomed by the half-drunken guests, and dispersed themselves with apparent carelessness among the company; but as one of the Spartan lords attempted to lift the veil of the person who was addressing him, he received a mortal wound. It was the signal for a general attack. Swords were drawn from beneath the silken garments, and no Spartan left the room alive. The prisons were now opened, and five hundred Thebans, who had been immured there for their love of freedom, were added to the armed force of the revolutionists. As day dawned, all citizens who valued liberty were summoned to the market-place. A joyful assembly was held, the first since the Spartan usurpation. The Lacedæmonians in the citadel were besieged, and their expected reinforcements being cut off, they speedily surrendered.
231. It was now the depth of winter, but when the news arrived at Sparta, instant preparations were made for war. Cleombrotus led an army into Bœotia, and Athens was called to account for having sheltered the exiles. Unable to enter upon war with Sparta, the Athenians consented to sacrifice their two generals who had rendered the most efficient aid to the Thebans. One was executed, and the other, having fled, was sentenced to banishment. The Thebans feared that they should be left to fight single-handed against Sparta. In order to compel Athens to take part in the war, they bribed Spho´drias, the Spartan general, to invade her territory. He entered Attica in the night and committed various ravages, but retired the next day. The Spartan government disclaimed all knowledge of the affair, and brought Sphodrias to trial for it; but, through the influence of Agesilaus, he was acquitted. Athens immediately made an active alliance with Thebes, and a declaration of war against her ancient rival.
B. C. 378.
232. A new confederacy was now formed on the plan of that of Delos, including, in its most prosperous period, seventy cities. Athens was the head, but the independence of the members was carefully guarded. A congress at Athens regulated the share of each in the general expenses. The fortifications of Piræus were completed, new ships of war were built, and all the allies hastened forward their contingents of troops. In Thebes, the Sacred Band was formed—a heavy-armed battalion, consisting of three hundred chosen citizens of the noblest families, bound to each other by ties of the closest friendship. Though Pelopidas was bœotarch, Epaminondas had the most prominent share in the drill and discipline of the troops.
B. C. 378-376.
B. C. 375.
During two summers the army of Agesilaus invaded the country, and carried its depredations to the very gates of Thebes. The third year the Thebans held the passes of Mount Cithæron, and kept out the invaders. The Spartans were no longer successful at sea. They were thoroughly defeated off Naxos by the Athenians, who thus regained their maritime empire in the East; while, in the western seas, Corcyra, Cephallenia, and the neighboring tribes on the mainland joined the Athenian alliance. The Thebans were no less victorious on land. During the two years that they were free from Spartan invasion, most of the Bœotian cities submitted to their control. In 374 B. C., all Spartans were expelled, free governments were restored to every city, except Orchomenus and Chæronea, and the Bœotian League was revived. The Phocians, who had, twenty years before, invited the Spartans into central Greece, were now the objects of vengeance, and not the less because the treasures of Delphi would be the prize of the victor. But Cleombrotus came to the aid of the Phocians, and the aggression was checked.
B. C. 374.
233. The Athenians had now various reasons for enmity against Thebes, and messengers were sent to Sparta with proposals of peace. They were eagerly accepted; but the inopportune restoration of the Zacynthian exiles by Timo´theus, son of Conon, at this crisis, broke off the negotiations, and war was renewed. It was carried on in the western sea, with great expense and no gain to either party; the main object of the Spartans being the conquest of Corcyra, and, of the Athenians, the protection of its independence. At length all parties were weary of war, and a general congress was appointed at Sparta in the spring of 371.
234. Peace of Cal´lias.[57] It was agreed that the Spartan garrisons should be withdrawn from every city, and independence secured to all. Athens and her allies signed the treaty separately, but Sparta took the oaths for the whole Lacedæmonian Confederacy. When the Thebans were called upon, Epaminondas refused to sign except for the whole Bœotian League, claiming that Thebes was as rightfully the sovereign city of Bœotia, as Sparta of Laconia. He defended his view in a speech of great eloquence; but Agesilaus was violently incensed. Peace was concluded between the other states, but Thebes and Sparta continued at war.