History of the Peloponnesian War

For fourteen years the thirty years' truce which had been concluded after the capture of Euboea remained unbroken; but in the fifteenth year, when Chrysis was in the forty-eighth year of her priesthood[*](The commencement of the war is fixed according to the forms of reckoning customary in the three most important Hellenic states.) at Argos, and Aenesias was ephor at Sparta, and Pythodorus had still four months to serve as archon at Athens, in the sixteenth month after the battle of Potidaea, at the opening of[*](431 B.C.) spring, some Thebans, a little more than three hundred in number, under the command of the Boeotarchs Pythangelus son of Phyleidas and Diemporus son of Onetoridas, about the first watch of the night entered under arms into Plataea, a They had been invited over by some Plataeans, Naucleides and his partisans, who opened the gates for them, intending, with a view to getting power into their hands, to destroy the citizens who were of the opposite party and make over the city to