Marathon (Second Persian Invasion).
Fought September 490 B.C., between the Athenians and Platæans, 10,000 and 1,000 strong respectively, under Miltiades, and the army of Darius Hystaspes, about 100,000 in number, under Datis. Being greatly outnumbered, Miltiades altered the usual arrangement of the Greek line, so as to extend his wings across the whole width of the valley in which the battle was fought, and thus escape being outflanked. To effect this he was forced to weaken his centre, which was repulsed, but both his wings drove back the invaders, and then fell upon and routed the victorious Persian centre. The Persians fled in confusion to their ships, which they succeeded in launching, and escaped with a loss of 6,400. The Athenians lost 192 only.