He now turned his march westward, to reach the borders of Illyria, through the country of the Agrianians and Pæonians, on the western side of the mountains which contain the springs of the Hebrus and the Nestus. The king however was enabled to pursue his march without obstruction up the valley of the Erigon, towards the fortress of Pelium. It stood on high ground in the midst of lofty wooded hills, which were also guarded by Illyrian troops, so as to command all the approaches of the place; and the barbarians had sought an additional safeguard against the assaults of the Macedonians, in a sacrifice, which they celebrated on the hill tops, of three boys, three girls, and as many black rams. Yet all these precautions proved fruitless; and Alexander, after he made himself master of the adjacent hills—where he found the victims of those horrid rites—was proceeding to invest Pelium itself, when the arrival of Glaucias with a numerous army compelled him to retire, that he might provide for his own safety. We shall not dwell on the evolutions by which he extricated himself from a most perilous position. It is sufficient to mention that he first penetrated through a difficult defile, and crossed a river in the presence of an enemy greatly superior in numbers; and three days afterwards, having suddenly returned, fell upon the allies, whose camp was carelessly guarded, in the night, and broke up their host. Glaucias fled towards his home, and was pursued by Alexander with great slaughter as far as the mountains which protected his territories. Clitus at first took shelter in Pelium; but soon despairing of his own resources, set fire to the fortress, and retreated into the dominions of Glaucias.
THE REVOLT OF THEBES
[335 B.C.]
The accounts which reached Greece of Alexander’s operations in these wild and distant regions, were, it may be supposed, very imperfect and confused; and at length, during an interval in which no news was heard of him, a report of his death sprang up, or was studiously set afloat. The report seems to have encouraged a party of Theban exiles to enter the city by night, and attempt a revolution. They began in an unhappy spirit with the massacre of two officers of the Macedonian garrison. They then summoned an assembly, and prevailed on the people to rise in open insurrection, and lay siege to the Cadmea. The citizens who were still in exile were recalled, the slaves enfranchised, the aliens won by new privileges. Demosthenes furnished them with a subsidy which enabled them to procure arms, and induced the Athenians to enter into an alliance with them, and emboldened the people to decree an expedition in aid of the Thebans. This decree, however, was not carried into effect. Elis, too, openly espoused the cause of the Thebans so far as even to send their forces as far as the isthmus, where they were joined by those of some Arcadian states. But here their generals were induced to halt, by the tidings which reached them of Alexander’s return.
He was still at Pelium when he heard of the revolt of Thebes. He knew that unless it was crushed in time it would probably spread, and he was anxious about the garrison of the Cadmea. He therefore set out immediately for Bœotia. In seven days, having traversed the upper provinces of Macedonia and crossed the Cambunian range towards its junction with Pindus, he reached Pelinna in Thessaly. Six days more brought him into Bœotia. So rapid were his movements that, before the Thebans had heard that he had passed Thermopylæ, he had arrived at Onchestus. The authors of the insurrection would not at first listen to the news of his approach; they gave out that it was Antipater who commanded the Macedonian army: and then that Alexander, the son of Æropus, had been taken for his royal namesake. But when the truth was ascertained, they found the people still willing to persevere in the struggle which had now become so hopeless.