The momentous change of policy, on the part of the Persian king, was manifested by the order which he sent to the fleet after receiving intelligence of the death of Memnon. Confirming the appointment of Pharnabazus (made provisionally by the dying Memnon) as admiral, he at the same time despatched Thymôdes (son of Mentor and nephew of Memnon) to bring away from the fleet the Grecian mercenaries who served aboard, to be incorporated with the main Persian army.[247] Here was a clear proof that the main stress of offensive operations was henceforward to be transferred from the sea to the land.

It is the more important to note such desertion of policy, on the part of Darius, as the critical turning-point in the Greco-Persian drama—because Arrian and the other historians leave it out of sight, and set before us little except the secondary points in the case. Thus, for example, they condemn the imprudence of Darius, for coming to fight Alexander within the narrow space near Issus, instead of waiting for him on the spacious plains beyond Mount Amanus. Now, unquestionably, granting that a general battle was inevitable, this step augmented the chances in favor of the Macedonians. But it was a step upon which no material consequences turned; for the Persian army under Darius was hardly less unfit for a pitched battle in the open plain; as was afterwards proved at Arbela. The real imprudence—the neglect of the Memnonian warning—consisted in fighting the battle at all. Mountains and defiles were the real strength of the Persians, to be held as posts of defence against the invader. If Darius erred, it was not so much in relinquishing the open plain of Sochi, as in originally preferring that plain with a pitched battle, to the strong lines of defence offered by Taurus and Amanus.

The narrative of Arrian, exact perhaps in what it affirms, is not only brief and incomplete, but even omits on various occasions to put in relief the really important and determining points.

While halting at Gordium, Alexander was joined by those newly-married Macedonians whom he had sent home to winter, and who now came back with reinforcements to the number of 3000 infantry and 300 cavalry, together with 200 Thessalian cavalry, and 150 Eleians.[248] As soon as his troops had been sufficiently rested, he marched (probably about the latter half of May) towards Paphlagonia and Kappadokia. At Ankyra he was met by a deputation from the Paphlagonians, who submitted themselves to his discretion, only entreating that he would not conduct his army into their country. Accepting these terms, he placed them under the government of Kallas, his satrap of Hellespontine Phrygia. Advancing farther, he subdued the whole of Kappadokia, even to a considerable extent beyond the Halys, leaving therein Sabiktas as satrap.[249]

Having established security in his rear, Alexander marched southward towards Mount Taurus. He reached a post called the Camp of Cyrus, at the northern foot of that mountain, near the pass Tauri-pylæ, or Kilikian Gates, which forms the regular communication, between Kappadokia on the north side, and Kilikia on the south, of this great chain. The long road ascending and descending was generally narrow, winding, and rugged, sometimes between two steep and high banks; and it included, near its southern termination, one spot particularly obstructed and difficult. From ancient times, down to the present, the main road from Asia Minor into Kilikia and Syria has run through this pass. During the Roman empire, it must doubtless have received many improvements, so as to render the traffic comparatively easier. Yet the description given of it by modern travellers represents it to be as difficult as any road ever traversed by an army.[250] Seventy years before Alexander, it had been traversed by the younger Cyrus with the 10,000 Greeks, in his march up to attack his brother Artaxerxes; and Xenophon,[251] who then went through it, pronounces it absolutely impracticable for an army, if opposed by any occupying force. So thoroughly persuaded was Cyrus himself of this fact, that he had prepared a fleet, in case he found the pass occupied, to land troops by sea in Kilikia in the rear of the defenders; and great indeed was his astonishment, to discover that the habitual recklessness of Persian management had left the defile unguarded. The narrowest part, while hardly sufficient to contain four armed men abreast, was shut in by precipitous rock on each side.[252] Here, if anywhere, was the spot in which the defensive policy of Memnon might have been made sure. To Alexander, inferior as he was by sea, the resource employed by the younger Cyrus was not open.

Yet Arsames, the Persian satrap commanding at Tarsus in Kilikia, having received seemingly from his master no instructions, or worse than none, acted as if ignorant of the existence of his enterprising enemy north of Mount Taurus. On the first approach of Alexander, the few Persian soldiers occupying the pass fled without striking a blow, being seemingly unprepared for any enemy more formidable than mountain-robbers. Alexander thus became master of this almost insuperable barrier, without the loss of a man.[253] On the ensuing day, he marched his whole army over it into Kilikia, and arriving in a few hours at Tarsus, found the town already evacuated by Arsames.[254]

At Tarsus Alexander made a long halt; much longer than he intended. Either from excessive fatigue—or from bathing while hot in the chilly water of the river Kydnus—he was seized with a violent fever, which presently increased to so dangerous a pitch that his life was despaired of. Amidst the grief and alarm with which this misfortune filled the army, none of the physicians would venture to administer remedies, for fear of being held responsible for what threatened to be a fatal result.[255] One alone among them, an Akarnanian named Philippus, long known and trusted by Alexander, engaged to cure him by a violent purgative draught. Alexander directed him to prepare it; but before the time for taking it arrived, he received a confidential letter from Parmenio, entreating him to beware of Philippus, who had been bribed by Darius to poison him. After reading the letter, he put it under his pillow. Presently came Philippus with the medicine, which Alexander accepted and swallowed without remark, at the same time giving Philippus the letter to read, and watching the expression of his countenance. The look, words, and gestures of the physician were such as completely to reassure him. Philippus, indignantly repudiating the calumny, repeated his full confidence in the medicine, and pledged himself to abide the result. At first it operated so violently as to make Alexander seemingly worse, and even to bring him to death’s door; but after a certain interval, its healing effects became manifest. The fever was subdued, and Alexander was pronounced out of danger, to the delight of the whole army.[256] A reasonable time sufficed, to restore him to his former health and vigor.

It was his first operation, after recovery, to send forward Parmenio, at the head of the Greeks, Thessalians, and Thracians, in his army, for the purpose of clearing the forward route and of securing the pass called the Gates of Kilikia and Syria.[257] This narrow road, bounded by the range of Mount Amanus on the east and by the sea on the west, had been once barred by a double cross-wall with gates for passage, marking the original boundaries of Kilikia and Syria. The Gates, about six days’ march beyond Tarsus,[258] were found guarded, but the guard fled with little resistance. At the same time Alexander himself, conducting the Macedonian troops in a south-westerly direction from Tarsus, employed some time in mastering and regulating the towns of Anchialus and Soli, as well as the Kilikian mountaineers. Then, returning to Tarsus, and recommencing his forward march, he advanced with the infantry and with his chosen squadron of cavalry, first to Magarsus near the mouth of the river Pyramus, next to Mallus; the general body of cavalry, under Philôtus, being sent by a more direct route across the Alëian plain. Mallus, sacred to the prophet Amphilocus as a patron-hero, was said to be a colony from Argos; on both these grounds Alexander was disposed to treat it with peculiar respect. He offered solemn sacrifice to Amphilocus, exempted Mallus from tribute, and appeased some troublesome discord among the citizens.[259]

It was at Mallus that he received his first distinct communication respecting Darius and the main Persian army; which was said to be encamped at Sochi in Syria, on the eastern side of Mount Amanus, about two days’ march from the mountain pass now called Beylan. That pass, traversing the Amanian range, forms the continuance of the main road from Asia Minor into Syria, after having passed first over Taurus, and next through the difficult point of ground above specified (called the Gates of Kilikia and Syria), between Mount Amanus and the sea. Assembling his principal officers, Alexander communicated to them the position of Darius, now encamped in a spacious plain with prodigious superiority of numbers, especially of cavalry. Though the locality was thus rather favorable to the enemy, yet the Macedonians, full of hopes and courage, called upon Alexander to lead them forthwith against him. Accordingly Alexander, well pleased with their alacrity, began his forward march on the following morning. He passed through Issus, where he left some sick and wounded under a moderate guard—then through the Gates of Kilikia and Syria. At the second day’s march from those Gates, he reached the seaport of Myriandrus, the first town of Syria or Phenicia.[260]

Here, having been detained in his camp one day by a dreadful storm, he received intelligence which altogether changed his plans. The Persian army had been marched away from Sochi, and was now in Kilikia, following in his rear. It had already got possession of Issus.