Alexander's objective being India, eventually, and the Indus (of India, not of the Himalayas) immediately, he would take the road which led straightest from Massaga to the Indus; it is inconceivable that he would deliberately involve himself and his army in the maze of pathless mountains which enclose the head of Buner. He would certainly take the road which leads from Malakand to the Indus, on which lies Rustam. It has always been a great high-road. One of the most interesting discoveries in connection with the Tirah campaign was the old Buddhist road, well engineered and well graded, which leads from Malakand to the plains of the Punjab—those northern plains which abound with Buddhist relics. If we identify Bazar, or Rustam, with Bazireh we may assume with certainty that a retreating tribe, driven from any field of defeat on the straight high-road which links Panjkora with the Indus, would inevitably retire to the nearest and the highest mountain ridge that was within reach. This is certainly the ridge terminating with Mahaban and flanking the Buner valley on the south, a refuge in time of trouble for many a lawless people. Probability, then, would seem to favour Mahaban, or some mountain position near it. The modern name of this peak is Shah Kot, and it is occupied by a mixed and irregular folk. Here Dr. Stein spent an unhappy night in a whirling snow-storm, but he succeeded in examining the mountain thoroughly. He decided that that position of Mahaban could not possibly represent Aornos, for the following reasons:—The hill-top is too narrow for military action; the ascent, instead of being difficult, is easy from every side; and there is no spring of water on the summit, which summit must have been a very considerable plateau to admit of the action described; finally, there is no great ravine, and therefore no opportunity for the erection of the mound described by Arrian, which enabled the Greeks to fusilade the enemy's camp with darts and stones. Can we reconcile these discrepancies with the text of history?
After the reduction of Bazira Alexander marched towards the Indus and received the submission of Peukelaotis, which was then the capital of what is now, roughly speaking, the Peshawur district. The site of this ancient capital appears to be ascertained beyond doubt, and we must regard it as fixed near Charsadda, about 17 miles north-east (not north-west as M'Crindle has it) from Peshawur. From this place Alexander marched to Embolina, which is said to be a city close adjoining the rock of Aornos. On the route thither he is said by Arrian to have taken "many other small towns seated upon that river," i.e. the Indus; two princes of that province, Cophæus and Assagetes, accompanying him. This sufficiently indicates that his march must have been up the right bank of the Indus, which would be the natural route for him to follow. Arrived at Embolina, he arranged for a base of supplies at that point, and then, with "Archers, Agrians, Cænus' Troop" and the choicest, best armed, and most expeditious foot out of the whole army, besides 200 auxiliary horse and 100 equestrian archers, he marched towards the "rock" (8 miles distant), and on the first day chose a place convenient for an encampment. The day after, he pitched his tents much higher. The ancient Embolina may not be the modern Amb, but Amb undoubtedly is an extremely probable site for such a base of supplies to be formed, whether the final objective were Mahaban or any place (as suggested by Stein) higher up the river. The fact that there is a similarity in the names Amb and Embolina need not militate against the adoption of the site of Amb as by far the most probable that any sagacious military commander would select. A mere resemblance between the ancient and modern names of places may, of course, be most deceptive. On the other hand it is often a most valuable indication, and one certainly not to be neglected. Place-names last with traditional tenacity in the East, and obscured as they certainly would be by Greek transliteration (after all, not worse than British transliteration), they still offer a chance of identifying old positions such as nothing else can offer excepting accurate topographical description. Once again, if Embolina were not Amb it certainly ought to have been.
Alexander's next movements from Embolina most clearly indicate that he had to deal with a mountain position. There is no getting away from it, nor from the fact that the road to it was passable for horsemen, and therefore not insuperably difficult. At the same time he had to move as slowly as any modern force would move, for he was traversing the rough spurs of a hill which ran to 7800 feet in altitude. Further, the mountain was high enough to render signalling by fire useful. The "rock" was obviously either a mountain itself or it was perched on the summit of a mountain. Ptolemy as usual had conducted the reconnaissance. He established himself unobserved in a temporary position on the crest, within reach of the enemy, who attempted to dispossess him and failed; and it was he who (according to the story) signalled to Alexander. Ptolemy had followed a route, with guides, which proved rough and difficult, and Alexander's attempt to join him next day was prevented by the fierce activity of the mountaineers, who were plainly fighting from the mountain spurs. Then, it is said, Alexander communicated with Ptolemy by night and arranged a combined plan of attack. When it "was almost night" of the following day Alexander succeeded in joining Ptolemy, but only after severe fighting during the ascent. Then the combined forces attacked the "rock" and failed. All this so far is plain unvarnished mountain warfare, and the incidents follow each other as naturally as in any modern campaign. It becomes clear that the "rock" was a position on the crest of a high mountain, the ascent of which was rendered doubly difficult by fierce opposition. But it was practicable. Nothing is said about cavalry ascending. Why, then, did Alexander take cavalry? This question leads to another. Why do our frontier generals always burden themselves with cavalry on these frontier expeditions? They cannot act on the mountain-sides, and they are useless for purposes of pursuit. The answer is that they are most valuable for preserving the line of communication. Without the cavalry Alexander had no overwhelming force at his disposal, and it would not be very hazardous if we assumed that the force which actually reached the crest of the mountain was a comparatively small one—much of the original brigade being dispersed on the route.
Dr. Stein found the ascent too easy to reconcile with history. This might possibly be the effect of long weather action of the slopes of mountains subject to severe snow-falls. Twenty-three centuries of wind and weather have beaten on those scarred and broken slopes since Alexander's day. Those twenty-three centuries have had such effect on the physical outlines of land conformation elsewhere as absolutely to obliterate the tracks over which the Greek force most undoubtedly passed. What may have been the exact effect of them on Mahaban, whether (as usual) they rounded off sharp edges, cut out new channels, obliterated some water springs and gave rise to others, smoothing down the ruggedness of spurs and shaping the drainage, we cannot say. Only it is certain that the slopes of Mahaban—and its crest for that matter—are not what they were twenty-three centuries ago. We shall never recognize Aornos by its superficial features. Then, in the Greek story, follows the episode of filling up the great ravine which yawned between the Greek position and the "rock" on which the tribespeople were massed, and the final abandonment of the latter when, after three days' incessant toil, a mound had been raised from which it could be assailed by the darts and missiles of the Greeks. Arrian tells the story with a certain amount of detail. He states that a "huge rampart" was raised "from the level of that part of the hill where their entrenchment was" by means of "poles and stakes," the whole being "perfected in three days." On the fourth day the Greeks began to build a "mound opposite the rock," and Alexander decided to extend the "Rampart" to the mound. It was then that the "Barbarians" decided to surrender.
In the particular translation from which I have quoted (Rookes, 1829) there is nothing said about the "great ravine" of which Stein writes that it is clearly referred to by "all texts," and a very little consideration will show that it could never have existed. No matter what might have been the strength of Alexander's force it could only have been numbered by hundreds and not by thousands, when it reached the summit of the mountain. We might refer to the modern analogy of the expedition to the summit of the Takht-i-Suliman, where it was found quite impossible to maintain a few companies of infantry for more than two or three days. Numbers engaged in action are proverbially exaggerated, especially in the East; but the physical impossibility of keeping a large force on the top of a mountain must certainly be acknowledged. Even supposing there were a thousand men, and that no guards were required, and no reliefs, and that the whole force could apply themselves to filling up a "large ravine" with such "stakes and poles" as they could carry or drag from the mountain-slopes, it would take three months rather than three days to fill up any ravine which could possibly be called "large." General Abbott, as a scientific officer, was probably quite correct in his estimate of the "Rampart" as some sort of a "trench of approach with a parapet." There could not possibly have been a "great mound built of stakes and poles for crossing a ravine." It may be noted that Ptolemy's defensive work on his first arrival on the summit is called (or translated) "Rampart," and yet we know that it could only have been a palisade or an abattis. The story told by Arrian (and possibly maltreated by translators) is doubtless full of inaccuracies and exaggerations, but we decline to believe that it is pure invention. There is nothing in it, so far, which absolutely militates against the Mahaban of to-day (that refuge for Hindustani fanatics at one time, and for the discontented tribesfolk of the whole countryside through all time) being the Aornos of Arrian. No appearance of "precipices" is, however, to be found in the survey of the summit which accompanied Dr. Stein's report, and no opportunity for the defeated tribesmen to fall into the river. The story runs that the defeated mountaineers retreating from the victorious Greeks fell over the precipices in their hot haste, and that many of them were drowned in the Indus. This is indeed an incident which might be added as an effective addition to any tall story of a fight which took place on hills in the immediate neighbourhood of a river; but under no conceivable circumstances could it be adjusted to the formation of the Mahaban hill, even if it were admitted that armoured Greeks were any match in the hills for the fleet-footed and light-clad Indians. Probably the incident is purely decorative, but we need not therefore assume that the whole story is fiction. It has been pointed out by Sir Bindon Blood, who commanded the latest expedition to the Buner valley, that failing Mahaban there is north of the Buner River, immediately overlooking the Indus, a peak called Baio with precipitous flanks on the river side, which would fit in with the tale of Aornos better even than Mahaban. The Buner River joins the Indus through an impassable gorge steeply entrenched on either side, and a mile or two above it is the peak of Baio. So far as the Indus is concerned, that river presents no difficulties, for boats can be hauled up it far beyond Baio—even to Thakot. Looking northward or westward from above Kotkai one sees the river winding round the foot of the lower spurs of the Black Mountain on its left or eastern bank. Beyond is Baio on its right bank, towering (with a clumsy fort on its summit) over the Indus and forming part of a continuous ridge, beyond which again in the blue distance is the line of hills over which is the Ambela Pass at the head of the Chumla valley. (It is curious how the nomenclature hereabouts echoes faintly the Greek Embolina.) Above Baio is the ford of Chakesar, from which runs an old-time road westward to Manglaor, once the Buddhist capital of Swat. It would be all within reach of either Indians or Greeks, so we need not quite give up the thrilling tale of Aornos yet, even if Dr. Stein defeats us on Mahaban.
Then follows the narrative of an excursion into the country of the Assakenoi and the capture of the elephants, which had been taken for safety into the hills. The scene of this short expedition must have been near the Indus, and was probably the valley of the Chumla or Buner immediately under Mahaban, to the north. There was in those far-off days a different class of vegetation on the Indus banks to any which exists at present. We know that a good deal of the Indus plain below its debouchment from the hills was a reedy swamp in Alexander's time, and it was certainly the haunt of the rhinoceros for centuries subsequently, and consequently quite suitable for elephants, and it is probable that for some little distance above its debouchment the same sort of pasturage was obtainable. Most interesting perhaps of all the incidents in Arrian's history is that which now follows. We are told that "Alexander then entered that part of the country which lies between the Kophen and the Indus, where Nysa is said to be situate." Other authorities, however, Curtius (viii. 10), Strabo (xv. 697), and Justin (xii. 7), make him a visitor to Nysa before he crossed the Choaspes and took Massaga. All this is very vague; the river he crossed immediately before taking Massaga was certainly the Gauraios or Panjkora.
There is a certain element of confusion in classical writings in dealing with river names which we need not wait to investigate; nor is it a matter of great importance whether Alexander retraced his steps all the way to the country of Nysa (for no particular reason), or whether he visited Nysa as he passed from the Kunar valley to the Panjkora. The latter is far more probable, as Nysa (if we have succeeded in identifying that interesting relic of pre-Alexandrian Greek occupation) would be right in his path. Various authorities have placed Nysa in different parts of the wide area indicated as lying between the Kophen (Kabul) and the Indus, but none, before the Asmar Boundary Commission surveyed the Kunar valley in the year 1894, had the opportunity of studying the question in loco. Even then there was no possibility of reaching the actual site which was indicated as the site of Nysa; and when subsequently in 1898 geographical surveys of Swat were pushed forward wherever it was possible for surveyors to obtain a footing, they never approached that isolated band of hills at the foot of which Nysa once lay. The result of inquiries instituted during the progress of demarcating the boundary between Afghanistan and the independent districts of the east from Asmar have been given in the R.G.S. Journal, vol. vii., and no subsequent information has been obtained which might lead me to modify the views therein expressed, excepting perhaps in the doubtful point as to when, in the course of his expedition, Alexander visited Nysa. In the first engraved Atlas sheet of the Indian Survey dealing with the regions east of the Kunar River, the name of Nysa, or Nyssa, is recorded as one of the most important places in that neighbourhood, and it is placed just south of the Koh-i-Mor, a spur, or extension, from the eastern ridges of the Kunar valley. From what source of information this addition to the map was made it is difficult to say, now that the first compiler of those maps (General Walker) has passed away. But it was undoubtedly a native source. Similarly the information obtained at Asmar, that a large and scattered village named Nusa was to be found in that position, was also from a native (Yusufzai) source. No possible cause can be suggested for this agreement between the two native authorities, and it is unlikely that the name could have been invented by both. At the same time Nysa, or Nusa, is not now generally known to the borderland people near the Indian frontier, and it is certainly no longer an important village. It is probably no more than scattered and hidden ruins. Above it towers the three-peaked hill called the Koh-i-Mor, whose outlines can be clearly distinguished from Peshawur on any clear day, and on that hill grows the wild vine and the ivy, even as they grow in glorious trailing and exuberant masses on the scarped slopes of the Kafiristan hills to the west.
We may repeat here what Arrian has to say about Nysa. "The city was built by Dionysos or Bacchus when he conquered the Indians, but who this Bacchus was, or at what time or from whence he conquered the Indians is hard to determine. Whether he was that Theban who from Thebes or he who from Tmolus, a mountain of Lydia, undertook that famous expedition into India ... is very uncertain." So here we have a clear reference to previous invasions of India from Greece, which were regarded as historical in Arrian's time. However, as soon as Alexander arrived at Nysa a deputation of Nysæans, headed by one Akulphis, waited on him, and, after recovering from the astonishment that his extraordinary appearance inspired, they presented a petition. "The Nysæans entreat thee O King, for the reverence thou bearest to Dionysos, their God, to leave their city untouched ... for Bacchus ... built this city for an habitation for such of his soldiers as age or accident had rendered unfit for military service.... He called this city Nysa (Nuson) after the name of his nurse ... and the mountain also, which is so near us, he would have denominated Meros (or the thigh) alluding to his birth from that of Jupiter ... and as an undoubted token that the place was founded by Bacchus, the ivy which is to be found nowhere else throughout all India, flourishes in our territories." Alexander was pleased to grant the petition, and ordered that a hundred of the chief citizens should join his camp and accompany him. It was then that Akulphis, with much native shrewdness, suggested that if he really had the good of the city at heart he should take two hundred of the worst citizens instead of one hundred of the best—a suggestion which appealed at once to Alexander's good sense, and the demand was withdrawn. Alexander then visited the mountain and sacrificed to Bacchus, his troops meanwhile making garlands of ivy "wherewith they crowned their heads, singing and calling loudly upon the god, not only by the name of Dionysos, but by all his other names." A sort of Bacchic orgy!
But who were the Nysæans, and what became of them? In Arrian's Indika he says: "The Assakenoi" (who inhabited the Swat valley east of Nysa) "are not men of great stature like the Indians ... not so brave nor yet so swarthy as most Indians. They were in old times subject to the Assyrians; then after a period of Median rule submitted to the Persians ... the Nysaioi, however, are not an Indian race, but descendants of those who came to India with Dionysos"; he adds that the mountain "in the lower slopes of which Nysa is built" is designated Meros, and he clearly distinguishes between Assakenoi and Nysaioi. M. de St. Martin says that the name Nysa is of Persian or Median origin; but although we know that Assyrians, Persians, and Medes all overran this part of India before Alexander, and all must have left, as was the invariable custom of those days, representatives of their nationality behind them who have divided with subsequent Skyths the ethnographical origin of many of the Upper Indian valley tribes of to-day, there seems no sound reason for disputing the origin of this particular name.
Ptolemy barely mentions Nysa, but we learn something about the Nysæans from fragments of the Indika of Megasthenes, which have been collected by Dr. Schwanbeck and translated by M'Crindle. We learn that this pre-Alexandrian Greek Dionysos was a most beneficent conqueror. He taught the Indians how to make wine and cultivate the fields; he introduced the system of retiring to the slopes of Meros (the first "hill station" in India) in the hot weather, where "the army recruited by the cold breezes and the water which flowed fresh from the fountains, recovered from sickness.... Having achieved altogether many great and noble works, he was regarded as a deity, and obtained immortal honours."