At length the Romans resolved to send the right man to Greece. This was Lucius Aemilius Paullus, son of the consul of the same name that fell at Cannae; a man of the old nobility but of humble means, and therefore not so successful in the comitia as on the battle-field, where he had remarkably distinguished himself in Spain and still more so in Liguria. The people elected him for the second time consul in the year 586 on account of his merits - a course which was at that time rare and exceptional. He was in all respects the right man: an excellent general of the old school, strict as respected both himself and his troops, and, notwithstanding his sixty years, still hale and vigorous; an incorruptible magistrate - "one of the few Romans of that age, to whom one could not offer money", as a contemporary says of him - and a man of Hellenic culture, who, even when commander-in-chief, embraced the opportunity of travelling through Greece to inspect its works of art.

As soon as the new general arrived in the camp at Heracleum, he gave orders for the ill-guarded pass at Pythium to be surprised by Publius Nasica, while skirmishes between the outposts in the channel of the river Elpius occupied the attention of the Macedonians; the enemy was thus turned, and was obliged to retreat to Pydna. There on the Roman 4th of September, 586, or on the 22nd of June of the Julian calendar - an eclipse of the moon, which a scientific Roman officer announced beforehand to the army that it might not be regarded as a bad omen, affords in this case the means of determining the date - the outposts accidentally fell into conflict as they were watering their horses after midday; and both sides determined at once to give the battle, which it was originally intended to postpone till the following day. Passing through the ranks in person, without helmet or shield, the grey-headed Roman general arranged his men. Scarce were they in position, when the formidable phalanx assailed them; the general himself, who had witnessed many a hard fight, afterwards acknowledged that he had trembled. The Roman vanguard dispersed; a Paelignian cohort was overthrown and almost annihilated; the legions themselves hurriedly retreated till they reached a hill close upon the Roman camp. Here the fortune of the day changed. The uneven ground and the hurried pursuit had disordered the ranks of the phalanx; the Romans in single cohorts entered at every gap, and attacked it on the flanks and in rear; the Macedonian cavalry which alone could have rendered aid looked calmly on, and soon fled in a body, the king among the foremost; and thus the fate of Macedonia was decided in less than an hour. The 3000 select phalangites allowed themselves to be cut down to the last man; it was as if the phalanx, which fought its last great battle at Pydna, had itself wished to perish there. The overthrow was fearful; 20,000 Macedonians lay on the field of battle, 11,000 were prisoners. The war was at an end, on the fifteenth day after Paullus had assumed the command; all Macedonia submitted in two days. The king fled with his gold - he still had more than 6000 talents (1,460,000 pounds) in his chest - to Samothrace, accompanied by a few faithful attendants. But he himself put to death one of these, Evander of Crete, who was to be called to account as instigator of the attempted assassination of Eumenes; and then the king's pages and his last comrades also deserted him. For a moment he hoped that the right of asylum would protect him; but he himself perceived that he was clinging to a straw. An attempt to take flight to Cotys failed. So he wrote to the consul; but the letter was not received, because he had designated himself in it as king. He recognized his fate, and surrendered to the Romans at discretion with his children and his treasures, pusillanimous and weeping so as to disgust even his conquerors. With a grave satisfaction, and with thoughts turning rather on the mutability of fortune than on his own present success, the consul received the most illustrious captive whom Roman general had ever brought home. Perseus died a few years after, as a state prisoner, at Alba on the Fucine lake[5]; his son in after years earned a living in the same Italian country town as a clerk.

Thus perished the empire of Alexander the Great, which had subdued and Hellenized the east, 144 years after its founder's death.

That the tragedy, moreover, might not be without its accompaniment of farce, at the same time the war against "king" Genthius of Illyria was also begun and ended by the praetor Lucius Anicius within thirty days. The piratical fleet was taken, the capital Scodra was captured, and the two kings, the heir of Alexander the Great and the heir of Pleuratus, entered Rome side by side as prisoners.

The senate had resolved that the peril, which the unseasonable gentleness of Flamininus had brought on Rome, should not recur. Macedonia was abolished. In the conference at Amphipolis on the Strymon the Roman commission ordained that the compact, thoroughly monarchical, single state should be broken up into four republican-federative leagues moulded on the system of the Greek confederacies, viz. that of Amphipolis in the eastern regions, that of Thessalonica with the Chalcidian peninsula, that of Pella on the frontiers of Thessaly, and that of Pelagonia in the interior. Intermarriages between persons belonging to different confederacies were to be invalid, and no one might be a freeholder in more than one of them. All royal officials, as well as their grown-up sons, were obliged to leave the country and resort to Italy on pain of death; the Romans still dreaded, and with reason, the throbbings of the ancient loyalty. The law of the land and the former constitution otherwise remained in force; the magistrates were of course nominated by election in each community, and the power in the communities as well as in the confederacies was placed in the hands of the upper class. The royal domains and royalties were not granted to the confederacies, and these were specially prohibited from working the gold and silvei mines, a chief source of the national wealth; but in 596 they were again permitted to work at least the silver-mines[6]. The import of salt, and the export of timber for shipbuilding, were prohibited. The land-tax hitherto paid to the king ceased, and the confederacies and communities were left to tax themselves; but these had to pay to Rome half of the former land-tax, according to a rate fixed once for all, amounting in all to 100 talents annually (24,000 pounds)[7]. The whole land was for ever disarmed, and the fortress of Demetrias was razed; on the northern frontier alone a chain of posts was to be retained to guard against the incursions of the barbarians. Of the arms given up, the copper shields were sent to Rome, and the rest were burnt.

The Romans gained their object. The Macedonian land still on two occasions took up arms at the call of princes of the old reigning house; but otherwise from that time to the present day it has remained without a history.

Illyria was treated in a similar way. The kingdom of Genthius was split up into three small free states. There too the freeholders paid the half of the former land-tax to their new masters, with the exception of the towns, which had adhered to Rome and in return obtained exemption from land-tax - an exception, which there was no opportunity to make in the case of Macedonia. The Illyrian piratic fleet was confiscated, and presented to the more reputable Greek communities along that coast. The constant annoyances, which the Illyrians inflicted on the neighbours by their corsairs, were in this way put an end to, at least for a lengthened period.