No sooner had they heard than the arrows of the Immortals were pouring in upon them. They fell back, leaving the pathway free, while they hastily put on their armour and prepared to fight to the death. They did not dream that the Immortals had no wish to fight with them. But so it was, for the Persians took no more notice of them, but finding the hill path free, they sped downward to the pass to take the Spartans in the rear. The Phocians were left alone on the heights almost before they were aware. Leonidas had heard of the treachery of Ephialtes soon after the traitor left the Persian king. He knew that to try to hold the pass now that he would be attacked in the rear was certain death. Yet the brave king did not hesitate, for his orders had been to hold the pass at all costs. Nor did he waver as he remembered the ominous words of the oracle, ‘Sparta must be overthrown or one of her kings must perish.’ It seemed that he was the king who was doomed to die, but what of that if his country was saved? He resolved that to Sparta alone should belong the glory of the defence of Thermopylae. So while there was still time, he sent away all his allies, keeping with him only his three hundred Spartans, seven hundred Thespians who refused to leave him, and four hundred Boeotians, lest they should join the enemy. Then ‘when the sun arose, Xerxes poured out wine to the gods and the barbarians arose for the onset, and the men of Leonidas knew now that they must die.’ But they would die fighting, and before they were attacked in the rear they would do great deeds. Fierce and desperate was their defence, and before the fury of their blows the barbarians fell in heaps. Once again, the Persian officers, armed with whips, had to drive their men forward to face the small but undaunted band. In the confusion many of the great host of Xerxes were pushed into the sea, while many more were trampled to death by their comrades. So furious was the struggle, that at length the spears of the Spartans were broken in their hands. In a moment, they had seized their swords and hundreds of the Persians fell before their terrible thrusts. But now the worst that could befall the Spartans happened. Leonidas, their brave king Leonidas, was slain where he fought in the forefront of the battle. A terrible struggle at once began for the body of the king. Four times the Spartans drove back the Persians, and then with one tremendous effort they carried away the body of their king.