Forces like those of Mithradates had not been seen in Asia since the Persian wars. The statements that, leaving out of account the Armenian auxiliary army, he took the field with 250,000 infantry and 40,000 cavalry, and that 300 Pontic decked and 100 open vessels put to sea, seem not too exaggerated in the case of a warlike sovereign who had at his disposal the numberless inhabitants of the steppes. His generals, particularly the brothers Neoptolemus and Archelaus, were experienced and cautious Greek captains; among the soldiers of the king there was no want of brave men who despised death; and the armour glittering with gold and silver and the rich dresses of the Scythians and Medes mingled gaily with the bronze and steel of the Greek troopers. No unity of military organization, it is true, bound together these party-coloured masses; the army of Mithradates was just one of those unwieldy Asiatic war-machines, which had so often already - on the last occasion exactly a century before at Magnesia - succumbed to a superior military organization; but still the east was in arms against the Romans, while in the western half of the empire also matters looked far from peaceful.

However much it was in itself a political necessity for Rome to declare war against Mithradates, yet the particular moment was as unhappily chosen as possible; and for this reason it is very probable that Manius Aquillius brought about the rupture between Rome and Mithradates at this precise time primarily from regard to his own interests. For the moment they had no other troops at their disposal in Asia than the small Roman division under Lucius Cassius and the militia of western Asia, and, owing to the military and financial distress in which they were placed at home in consequence of the insurrectionary war, a Roman army could not in the most favourable case land in Asia before the summer of 666. Hitherto the Roman magistrates there had a difficult position; but they hoped to protect the Roman province and to be able to hold their ground as they stood - the Bithynian army under king Nicomedes in its position taken up in the previous year in the Paphlagonian territory between Amastris and Sinope, and the divisions under Lucius Cassius, Manius Aquillius, and Quintus Oppius, farther back in the Bithynian, Galatian, and Cappadocian territories, while the Bithyno-Roman fleet continued to blockade the Bosporus.

In the beginning of the spring of 666 Mithradates assumed the offensive. On a tributary of the Halys, the Amnias (near the modern Tesch Kopri), the Pontic vanguard of cavalry and light-armed troops encountered the Bithynian army, and notwithstanding its very superior numbers so broke it at the first onset that the beaten army dispersed and the camp and military chest fell into the hands of the victors. It was mainly to Neoptolemus and Archelaus that the king was indebted for this brilliant success. The far more wretched Asiatic militia, stationed farther back, thereupon gave themselves up as vanquished, even before they encountered the enemy; when the generals of Mithradates approached them, they dispersed. A Roman division was defeated in Cappadocia; Cassius sought to keep the field in Phrygia with the militia, but he discharged it again without venturing on a battle, and threw himself with his few trustworthy troops into the townships on the upper Maeander, particularly into Apamea. Oppius in like manner evacuated Pamphylia and shut himself up in the Phrygian Laodicea; Aquillius was overtaken while retreating at the Sangarius in the Bithynian territory, and so totally defeated that he lost his camp and had to seek refuge at Pergamus in the Roman province; the latter also was soon overrun, and Pergamus itself fell into the hands of the king, as likewise the Bosporus and the ships that were there. After each victory Mithradates had dismissed all the prisoners belonging to the militia of Asia Minor, and had neglected no step to raise to a higher pitch the national sympathies that were from the first turned towards him. Now the whole country as far as the Maeander was with the exception of a few fortresses in his power; and news at the same time arrived, that a new revolution had broken out at Rome, that the consul Sulla destined to act against Mithradates had instead of embarking for Asia marched on Rome, that the most celebrated Roman generals were fighting battles with each other in order to settle to whom the chief command in the Asiatic war should belong. Rome seemed zealously employed in the work of self-destruction: it is no wonder that, though even now minorities everywhere adhered to Rome, the great body of the natives of Asia Minor joined the Pontic king. Hellenes and Asiatics united in the rejoicing which welcomed the deliverer; it became usual to compliment the king, in whom as in the divine conqueror of the Indians Asia and Hellas once more found a common meeting-point, under the name of the new Dionysus. The cities and islands sent messengers to meet him, wherever he went, and to invite "the delivering god" to visit them; and in festal attire the citizens flocked forth in front of their gates to receive him. Several places delivered the Roman officers sojourning among them in chains to the king; Laodicea thus surrendered Quintus Oppius, the commandant of the town, and Mytilene in Lesbos the consular Manius Aquillius[12]. The whole fury of the barbarian, who gets the man before whom he has trembled into his power, discharged itself on the unhappy author of the war.

The aged man was led throughout Asia Minor, sometimes on foot chained to a powerful mounted Bastarnian, sometimes bound on an ass and proclaiming his own name; and, when at length the pitiful spectacle again arrived at the royal quarters in Pergamus, by the king's orders molten gold was poured down his throat - in order to satiate his avarice, which had really occasioned the war - till he expired in torture.

But the king was not content with this savage mockery, which alone suffices to erase its author's name from the roll of true nobility. From Ephesus king Mithradates issued orders to all the governors and cities dependent on him to put to death on one and the same day all Italians residing within their bounds, whether free or slaves, without distinction of sex or age, and on no account, under severe penalties, to aid any of the proscribed to escape; to cast forth the corpses of the slain as a prey to the birds; to confiscate their property and to hand over one half of it to the murderers, and the other half to the king. The horrible orders were - excepting in a few districts, such as the island of Cos - punctually executed, and eighty, or according to other accounts one hundred and fifty, thousand - if not innocent, at least defenceless - men, women, and children were slaughtered in cold blood in one day in Asia Minor; a fearful execution, in which the good opportunity of getting rid of debts and the Asiatic servile willingness to perform any executioner's office at the bidding of the sultan had at least as much part as the comparatively noble feeling of revenge. In a political point of view this measure was not only without any rational object - for its financial purpose might have been attained without this bloody edict, and the natives of Asia Minor were not to be driven into warlike zeal even by the consciousness of the most blood-stained guilt - but even opposed to the king's designs, for on the one hand it compelled the Roman senate, so far as it was still capable of energy at all, to an energetic prosecution of the war, and on the other hand it struck at not the Romans merely, but the king's natural allies as well, the non-Roman Italians. This Ephesian massacre was altogether a mere meaningless act of brutally blind revenge, which obtains a false semblance of grandeur simply through the colossal proportions in which the character of sultanic rule was here displayed.