THE HUMILIATION OF SPARTA. 261 Epaminondas proved himself a thinker of the. highest military genius, Pelopidas a leader of the greatest military vigor. The work of the latter was largely performed with the Sacred Band, a warlike association of three hundred youthful Thebans, sworn to defend the citadel until death, bound by bonds of warm friendship, and trained into the highest military efficiency. Pelopidas was the cap- tain of this noble band, which was never overcome until the fatal battle of Cheeronéa, and then only by death, the Three Hundred lying dead in their ranks as they had stood. For the events with which we have now to deal we must leap over seven years from the freeing of Thebes. It will suffice to say that for two years of that time Sparta fought fiercely against that city, but could not bring it under subjection again. Then wars arose elsewhere and drew her armies away. Thebes now took the opportunity to extend her power over the other cities of Boeotia, and of one of these cities there is something of interest to tell. We have told in an earlier tale how Sparta and Thebes captured Plata and swept it from the face of the earth. Recently Sparta had rebuilt the city, recalled its exiled citizens, and placed it asa Spartan outpost against Thebes. But now, when the armies of Sparta had withdrawn, the Thebans deemed it a good opportunity to conquer it again. One day, when the Platewan men were at work in their fields, and unbroken peace prevailed, a Theban force sud- denly took the city by surprise, and forced the Plateeans to surrender at discretion. Poor Plata