Roman commissioners was not able to afford such persons any protection, and even the persons of Orestes and his colleagues were in imminent danger.

Some months afterwards a second commission arrived headed by Sextus Julius Caesar, and demanded, without any express menace, that the authors of the riot should be given up. The demand was evaded; and when Caesar returned to Rome with his report, war was at once declared.

The new Strategus, elected in the autumn of B.C. 147, was Critolaus. He was a bitter anti-Romanist like Diaeus: B.C. 147-146. and these statesmen and their party fancied that the Romans, having already two wars on hand, at Carthage and in Spain, would make any sacrifice to keep peace with Achaia. They had not indeed openly declined the demands of Sextus, but, to use Polybius’s expressive phrase, “they accepted with the left hand what the Romans offered with the right.”45 While pretending to be preparing to submit their case to the Senate, they were collecting an army from the cities of the league. Inspired with an inexplicable infatuation, which does not deserve the name of courage, Critolaus even advanced northwards towards Thermopylae, as if he could with his petty force bar the road to the Romans and free Greece. He was encouraged, it was said, by a party at Thebes which had suffered from Rome for its Macedonising policy. But, rash as the march was, it was managed with at least equal imprudence. Instead of occupying Thermopylae, they stopped short of it to besiege Trachinian Heracleia, an old Spartan colony,46 which refused to join the league. While engaged in this, Critolaus heard that Metellus (who wished to anticipate his successor Mummius) was on the march from Macedonia. He beat a hasty retreat to Scarpheia in Locris,47 which was on the road leading to Elateia and the south; here he was overtaken and defeated with considerable slaughter. Critolaus appears not to have fallen on the field; but he was never seen again. He was either lost in some marshes over which he attempted to escape, as Pausanias suggests, or poisoned himself, as Livy says. Diaeus, as his predecessor, became Strategus, and was elected for the following year also. Diaeus exerted himself to collect troops for the defence of Corinth, nominally as being at war with Sparta. He succeeded in getting as many as fourteen thousand infantry and six hundred cavalry, consisting partly of citizens and partly of slaves; and sent four thousand picked men under Alcamenes to hold Megara, while he himself occupied Corinth. When Metellus approached, however, this outpost at Megara hastily retreated into Corinth. Metellus took up his position in the Isthmus, and offered the Achaeans the fairest terms. Diaeus, however, induced them to reject all offers; and Metellus was kept some time encamped before Corinth.

It was now late in the spring of B.C. 146, and the new Consul, Lucius Mummius, arrived at the Roman camp. B.C. 146. Arrival of Mummius. He at once sent Metellus back to Macedonia, and quietly awaited the arrival of fresh troops, which he had sent for from Crete and Pergamum, as well as from Italy.48 He eventually had an army of about thirty thousand men, nearly double of the Greek army in Corinth. Nothing apparently was done till the late summer, or autumn. But then the final catastrophe was rapid and complete. The Roman officers regarded the Achaean force with such contempt, that they did not take proper precautions, so that Diaeus won a slight advantage against one of the Roman outposts. Flushed with this success, he drew out for a pitched battle, in which he was totally defeated. He made his way to Megalopolis, where, after killing his wife, he poisoned himself.

Thus by a series of imprudent measures, which Polybius denounces, but was not at home to oppose, the Achaean league had drifted into downright war with Rome; and, almost without a struggle, had fallen helplessly at her feet, forced to accept whatever her mercy or contempt might grant. Mercy, however, was to be preceded by stern punishment. Corinth was given up to plunder and to fire, and Polybius returned from Africa in time to witness it.49 The destruction or deportation of works of art, of pictures, statues, and costly furniture, he could not prevent; Polybius saves some statues of national interest. but he spoke a successful word to preserve the statues of Philopoemen in the various cities from destruction; and also begged successfully for the restoration of some of the Eponymous hero Achaeus, and of Philopoemen and Aratus, which had already been transported as far as Acarnania on their way to Italy.50 He also dissuaded his friends from rushing to take their share in the plunder by purchasing the confiscated goods of Diaeus, which were put to auction and could be bought at low rates; and he refused to accept any of them himself.51

The settlement of the territories of the league was put into the hands of a commission of ten men who were sent out after the sack of Corinth; The new settlement of the Peloponnese, B.C. 146-145. while Mummius, after seeing that such towns in the Peloponnese as had joined in the war were deprived of their fortifications and arms, and after inflicting punishment upon other towns in Greece which had shown active sympathy with Perseus, especially Thebes and Chalcis, returned home to celebrate his triumph, which was adorned with marble and bronze statues and pictures from Corinth.52 The commissioners who had been sent out to make a final settlement of Greece, or Achaia, as it was henceforth to be called in official language, settled the general plan in conjunction with Mummius; but the commissioners continued their labours for six months, at the end of which time they departed, leaving Polybius to settle with each town the details of their local legislation. The general principles which the commissioners laid down were first, the entire abolition of all the leagues, and consequently of the league assemblies; each town, with its surrounding district, which had once formed a canton in the league, was to be separate and independent: its magistrates, secondly, were to be selected according to a fixed assessment of property, the old equality or democracy being abolished: