With these hopes and risks, Miltiades, on the afternoon of a September day, 490 B.C., gave the word for the Athenian army to prepare for battle. There were many local associations connected with those mountain heights, which were calculated powerfully to excite the spirits of the men, and of which the commanders well knew how to avail themselves in their exhortations to their troops before the encounter. Marathon itself was a region sacred to; Hercules. Close to them was the fountain of Macaria, who had in days of yore devoted herself to death for the liberty of her people. The very plain on which they were to fight was the scene of the exploits of their national hero, Theseus; and there, too, as old legends told, the Athenians and the Heraclidae had routed the invader, Eurystheus. These traditions were not mere cloudy myths, or idle fictions, but matters of implicit earnest faith to the men of that day: and many a fervent prayer arose from the Athenian ranks to the heroic spirits who while on earth had striven and suffered on that very spot, and who were believed to be now heavenly powers, looking down with interest on their still beloved country, and capable of interposing with superhuman aid in its behalf. According to old national custom, the warriors of each tribe were arrayed together; neighbour thus fighting by the side of neighbour, friend by friend, and the spirit of emulation and the consciousness of responsibility excited to the very utmost. The War-Ruler, Callimachus, had the leading of the right wing; the Plataeans formed the extreme left; and Themistocles and Aristides commanded the centre. The line consisted of the heavy-armed spearmen only. For the Greeks (until the time of Iphicrates) took little or no account of light-armed soldiers in a pitched battle, using them only in skirmishes or for the pursuit of a defeated enemy. The panoply of the regular infantry consisted of a long spear, of a shield, helmet, breast-plate, greaves, and short sword. Thus equipped, they usually advanced slowly and steadily into action in an uniform phalanx of about eight spears deep. But the military genius of Miltiades led him to deviate on this occasion from the commonplace tactics of his countrymen. It was essential for him to extend his line so as to cover all the practicable ground, and to secure himself from being outflanked and charged in the rear by the Persian horse. This extension involved the weakening of his line. Instead of an uniform reduction of its strength, he determined on detaching principally from his centre, which, from the nature of the ground, would have the best opportunities for rallying if broken; and on strengthening his wings, so as to insure advantage at those points; and he trusted to his own skill, and to his soldiers' discipline, for the improvement of that advantage into decisive victory.