The Anabasis of Alexander by Arrian — Book V, The Approach to the Hydaspes

This has been the method of constructing bridges, practised by the Romans from olden times; but how Alexander laid a bridge over the river Indus I cannot say, because those who served in his army have said nothing about it. But I should think that the bridge was made as near as possible as I have described, or if it were effected by some other contrivance so let it be. ^8.2When Alexander had crossed to the other side of the river Indus, he again offered sacrifice there, according to his custom. Then starting from the Indus, he arrived at Taxila, a large and prosperous city, in fact the largest of those situated between the rivers Indus and Hydaspes. He was received in a friendly manner by Taxiles, the governor of the city, and by the Indians of that place; and he added to their territory as much of the adjacent country as they asked for. ^8.3Thither also came to him envoys from Abisares, king of the mountaineer Indians, the embassy including the brother of Abisares as well as the other most notable men. Other envoys also came from Doxareus, the chief of the province, bringing gifts with them. Here again at Taxila Alexander offered the sacrifices which were customary for him to offer, and celebrated a gymnastic and equestrian contest. Having appointed Philip, son of Machatas, viceroy of the Indians of that district, he left a garrison in Taxila, as well as the soldiers who were invalided by sickness, and then marched towards the river Hydaspes. ^8.4For he was informed that Porus, with the whole of his army was on the other side of that river, having determined either to prevent him from making the passage, or to attack him while crossing. When Alexander ascertained this, he sent Coenus, son of Polemocrates, back to the river Indus, with instructions to cut in pieces all the vessels which he had prepared for the passage of that river, and to bring them to the river Hydaspes. ^8.5Coenus cut the vessels in pieces and conveyed them thither, the smaller ones being cut into two parts, and the thirty-oared galleys into three. The sections were conveyed upon waggons, as far as the bank of the Hydaspes; and there the vessels were fixed together again, and seen as a fleet upon that river. Alexander took the forces which he had when he arrived at Taxila, and the 5,000 Indians under the command of Taxiles and the chiefs of that district, and marched towards the same river.

^9.1Alexander encamped on the bank of the Hydaspes, and Porus was seen with all his army and his large troop of elephants lining the opposite bank. He remained to guard the passage at the place where he saw Alexander had encamped; and sent guards to all the other parts of the river which were easily fordable, placing officers over each detachment, being resolved to obstruct the passage of the Macedonians. ^9.2When Alexander saw this, he thought it advisable to move his army in various directions, to distract the attention of Porus, and render him uncertain what to do. Dividing his army into many parts, he led some of his troops now in one direction and now in another, at one time ravaging the enemy’s country, at another looking out for a place where the river might appear easier for him to ford it. The rest of his troops he entrusted to his different generals, and sent them about in many directions. ^9.3He also conveyed corn from all quarters into his camp from the land on this side the Hydaspes, so that it might be evident to Porus that he had resolved to remain quiet near the bank until the water of the river subsided in the winter, and afforded him a passage in many places. As his vessels were sailing up and down the river, and skins were being filled with hay, and the whole bank appeared to be covered in one place with cavalry and in another with infantry, Porus was not allowed to keep at rest, or to bring his preparations together from all sides to any one point if he selected this as suitable for the defence of the passage. ^9.4Besides at this season all the Indian rivers were flowing with swollen and turbid waters and with rapid currents; for it was the time of year when the sun is wont to turn towards the summer solstice. At this season incessant and heavy rain falls in India; and the snows on the Caucasus, whence most of the rivers have their sources, melt and swell their streams to a great degree. But in the winter they again subside, become small and clear, and are fordable in certain places, with the exception of the Indus, Ganges, and perhaps one or two others. At any rate the Hydaspes becomes fordable.

^10.1Alexander therefore spread a report that he would wait for that season of the year, if his passage was obstructed at the present time; but yet all the time he was waiting in ambush to see whether by rapidity of movement he could steal a passage anywhere without being observed. But he perceived that it was impossible for him to cross at the place where Porus himself had encamped near the bank of the Hydaspes, not only on account of the multitude of his elephants, but also because his large army, arranged in order of battle and splendidly accoutred, was ready to attack his men as they emerged from the water. ^10.2Moreover he thought that his horses would not be willing to mount the opposite bank, because the elephants would at once fall upon them and frighten them both by their aspect and trumpeting; nor even before that would they remain upon the inflated hides during the passage of the river; but when they looked across and saw the elephants they would become frantic and leap into the water. ^10.3He therefore resolved to steal a crossing by the following manœuvre:—In the night he led most of his cavalry along the bank in various directions, making a clamour and raising the battle-cry in honour of Enyalius. Every kind of noise was raised, as if they were making all the preparations necessary for crossing the river. Porus also marched along the river at the head of his elephants opposite the places where the clamour was heard, and Alexander thus gradually got him into the habit of leading his men along opposite the noise. ^10.4But when this occurred frequently, and there was merely a clamour and a raising of the battle-cry, Porus no longer continued to move about to meet the expected advance of the cavalry; but perceiving that his fear had been groundless, he kept his position in the camp. However he posted his scouts at many places along the bank. When Alexander had brought it about that the mind of Porus no longer entertained any fear of his nocturnal attempts, he devised the following stratagem.

^11.1There was in the bank of the Hydaspes, a projecting headland, where the river makes a remarkable bend. It was densely covered by a grove, containing all sorts of trees; and over against it in the river was an island full of trees and without a foot-track, on account of its being uninhabited. Perceiving that this island was right in front of the headland, and that both the spots were woody and adapted to conceal his attempt to cross the river, he resolved to convey his army over at this place. ^11.2The headland and island were 150 stades distant from his great camp. Along the whole of the bank, he posted sentries, separated as far as was consistent with keeping each other in sight, and easily hearing when any order should be sent along from any quarter. From all sides also during many nights clamours were raised and fires were burnt. ^11.3But when he had made up his mind to undertake the passage of the river, he openly prepared his measures for crossing opposite the camp. Craterus had been left behind at the camp with his own division of cavalry, and the horsemen from the Arachotians and Parapamisadians, as well as the brigades of Alcetas and Polysperchon from the phalanx of the Macedonian infantry, together with the chiefs of the Indians dwelling this side of the Hyphasis, who had with them 5,000 men. ^11.4He gave Craterus orders not to cross the river before Porus moved off with his forces against them, or before he ascertained that Porus was in flight and that they were victorious. “If however,” said he, “Porus should take only a part of his army and march against me, and leave the other part with the elephants in his camp, in that case do thou also remain in thy present position. But if he leads all his elephants with him against me, and a part of the rest of his army is left behind in the camp, then do thou cross the river with all speed. For it is the elephants alone,” said he, “which render it impossible for the horses to land on the other bank. The rest of the army can easily cross.”

^12.1Such were the injunctions laid upon Craterus. Between the island and the great camp where Alexander had left this general, he posted Meleager, Attalus, and Gorgias, with the Grecian mercenaries, cavalry and infantry, giving them instructions to cross in detachments, breaking up the army as soon as they saw the Indians already involved in battle. ^12.2He then picked the select body-guard called the Companions, as well as the cavalry regiments of Hephaestion, Perdiccas, and Demetrius, the cavalry from Bactria, Sogdiana, and Scythia, and the Daan horse-archers; and from the phalanx of infantry the shield-bearing guards, the brigades of Clitus and Coenus, with the archers and Agrianians, and made a secret march, keeping far away from the bank of the river, in order not to be seen marching towards the island and headland, from which he had determined to cross. ^12.3There the skins were filled in the night with the hay which had been procured long before, and they were tightly stitched up. In the night a furious storm of rain occurred, by which his preparations and attempt to cross were rendered still more unobserved, since the noise of the thunder and the storm drowned with its din the clatter of the weapons and the noise which arose from the orders given by the officers. ^12.4Most of the vessels, the thirty-oared galleys included with the rest, had been cut in pieces by his order and conveyed to this place, where they had been fixed together again and hidden in the wood. At the approach of daylight, both the wind and the rain calmed down; and the rest of the army went over opposite the island, the cavalry mounting upon the skins, and as many of the foot soldiers as the boats would receive getting into them. They went so secretly that they were not observed by the sentinels posted by Porus, before they had already got beyond the island and were only a little way from the other bank.

^13.1Alexander himself embarked in a thirty-oared galley and went over, accompanied by Perdiccas, Lysimachus, the confidential body-guards, Seleucus, one of the Companions, who was afterwards king, and half of the shield-bearing guards; the rest of these troops being conveyed in other galleys of the same size. When the soldiers got beyond the island, they openly directed their course to the bank; and when the sentinels perceived that they had started, they at once rode off to Porus as fast as each man’s horse could gallop. ^13.2Alexander himself was the first to land, and he at once took the cavalry as they kept on landing from his own and the other thirty-oared galleys, and drew them up in proper order. For the cavalry had received orders to land first; and at the head of these in regular array he advanced. But through ignorance of the locality he had effected a landing on ground which was not a part of the mainland, but an island, a large one indeed and where from the fact that it was an island, he more easily escaped notice. It was cut off from the rest of the land by a part of the river where the water was shallow. ^13.3However, the furious storm of rain, which lasted the greater part of the night, had swelled the water so much that his cavalry could not find out the ford; and he was afraid that he would have to undergo another labour in crossing as great as the first. But when at last the ford was found, he led his men through it with much difficulty; for where the water was deepest, it reached higher than the breasts of the infantry; and of the horses only the heads rose above the river. ^13.4When he had also crossed this piece of water, he selected the choice guard of cavalry, and the best men from the other cavalry regiments, and brought them up from column into line on the right wing. In front of all the cavalry he posted the horse-archers, and placed next to the cavalry in front of the other infantry the royal shield-bearing guards under the command of Seleucus. Near these he placed the royal foot-guard, and next to these the other shield-bearing guards, as each happened at the time to have the right of precedence. On each side, at the extremities of the phalanx, his archers, Agrianians and javelin-throwers were posted.