But now occurred one of those sudden turns of fortune which were so common in Greek warfare. As the soldiers of the Athenian van rushed forward too hotly, wishing to complete the rout of the enemy they fell into disorder, and in this condition they were confronted by a stout little troop of Boeotian hoplites, who had found their way to Syracuse earlier in the summer. This unexpected resistance checked the furious onset of the Athenians, and the Boeotians, pursuing their advantage, charged in solid phalanx and put them to flight. Once more the tide of battle had turned against Athens. Restored to confidence by the steady valour of their allies, the Syracusans closed their ranks, and advanced in dense masses up the hill. A scene of indescribable horror and confusion ensued, so that no one was afterwards able to give a clear account of what had happened. On the narrow neck of land which forms the western end of Epipolae two great armies were rushing to the encounter. On one side was the main body of the Athenians, still ignorant of the defeat of their comrades, and hurrying forward to share in the victory. On the other side was the whole host of Syracuse, advancing with deafening shouts to meet them; and in the middle were the men of Demosthenes, flying in headlong rout before the conquering Boeotians. In the uncertain light, the fugitives were at first mistaken for enemies, and many of them perished miserably by the spears of their own countrymen. On came the Syracusans, bearing down all before them; but the Athenians, as they strove to escape, were flung back upon the enemy by fresh bodies of their own men, who were still thronging by thousands up the northern path of Euryelus. All semblance of order was now lost in the Athenian army, which was broken up into detached parties, some flying, some advancing, and shouting their watchword to all whom they met, so as to learn whether they had to do with friend or foe. But the Syracusans soon learnt the watchword, which thus became a means of betraying the Athenians to their own destruction. To add to the confusion, the Dorian allies of Athens raised a paean, or war-song, so similar to that of the Syracusans, that the Athenians fled at their approach supposing them to be enemies. The grand army of Demosthenes, which had set out with such high hopes, was now no better than a mob of wild and desperate men, friend fighting against friend, and citizen against citizen. At length the whole multitude turned and fled, each man seeking to save himself as best he could. Some, hard pressed by the enemy, flung themselves from the cliffs, and were dashed to pieces on the rocks below; others succeeded in reaching the plain, and found their way back to the camp of Nicias; while not a few lost their way, and wandered about the country until the following day, when they were hunted down and slain by the Syracusan horseman.