232 HISTORICAL TALES. Of these two sons, the new king was timid and incompetent; Cyrus was remarkably shrewd and able, and was filled with a consuming ambition. He wanted the Persian throne and knew the best means of obtaining it. He was well aware of the military ability of the Greeks. It was he who supplied the money which enabled Sparta to overthrow Athens. He now secretly enlisted a body of about thirteen thousand Greeks, promising them high pay if they would enter his service; and with these, and one hundred thousand Asiatics, he marched against his brother. But Cyrus was too shrewd to let his purpose be known. He gave out that he was going to put down some brigand mountaineers. Then when he had got his army far eastward, he threw off the mask and started on the long march across the desert to Baby- lonia. The Greeks had been deceived. At first they refused to follow him on so perilous an errand, and to such a distance from home. But by liberal promises he overcame their objections, and they marched on till the heart of Babylonia was reached. The army was now in the wonderfully fertile country between the rivers Euphrates and Tigris, that rich Mesopotamian region which had been part of the Persian empire since the great cities of Nineveh and Babylon were taken by the Persians a century before. And in all this long march no enemy had been met. But now Cyrus and his followers found themselves suddenly confronted by a great Persian army, led by Artaxerxes, the king, First a great cloud of white dust was seen in the