Antiochus took his resolution. A rupture with Rome, in spite of endeavours to postpone it by the diplomatic palliative of embassies, could no longer be avoided. As early as the spring of 561 Flamininus, who continued to have the decisive voice in the senate as to eastern affairs, had expressed the Roman ultimatum to the envoys of the king, Menippus and Hegesianax; viz. that he should either evacuate Europe and dispose of Asia at his pleasure, or retain Thrace and submit to the Roman protectorate over Smyrna, Lampsacus, and Alexandria Troas. These demands had been again discussed at Ephesus, the chief place of arms and fixed quarters of the king in Asia Minor, in the spring of 562, between Antiochus and the envoys of the senate, Publius Sulpicius and Publius Villius; and they had separated with the conviction on both sides thata peaceful settlement was no longer possible. Thenceforth war was resolved on in Rome. In that very summer of 562 a Roman fleet of 30 sail, with 3000 soldiers on board, under Aulus Atilius Serranus, appeared off Gythium, where their arrival accelerated the conclusion of the treaty between the Achaeans and Spartans; the eastern coasts of Sicily and Italy were strongly garrisoned, so as to be secure against any attempts at a landing; a land army was expected in Greece in the autumn. Since the spring of 562 Flamininus, by direction of the senate, had journeyed through Greece to thwart the intrigues of the opposite party, and to counteract as far as possible the evil effects of the ill-timed evacuation of the country. The Aetolians had already gone so far as formally to declare war in their diet against Rome. But Flamininus succeeded In saving Chalcis for the Romans by throwing into it a garrison of 500 Achaeans and 500 Pergamenes. He made an attempt also to recover Demetrias; and the Magnetes wavered. Though some towns in Asia Minor, which Antiochus had proposed to subdue before beginning the great war, still held out, he could now no longer delay his landing, unless he was willing to let the Romans recover all the advantages which they had surrendered two years before by withdrawing their garrisons from Greece. He collected the vessels and troops which were at hand - he had but 40 decked vessels and 10,000 infantry, along with 500 horse and 6 elephants - and started from the Thracian Chersonese for Greece, where he landed in the autumn of 562 at Pteleum on the Pagasaean gulf, and immediately occupied the adjoining Demetrias. Nearly about the same time a Roman army of some 25,000 men under the praetor Marcus Baebius landed at Apollonia. The war was thus begun on both sides.
Everything depended on the extent to which that comprehensively-planned coalition against Rome, of which Antiochus came forward as the head, might be realized. As to the plan, first of all, of stirring up enemies to the Romans in Carthage and Italy, it was the fate of Hannibal at the court of Ephesus, as through his whole career, to have projected his noble and high-spirited plans for the behoof of people pedantic and mean. Nothing was done towards their execution, except that some Carthaginian patriots were compromised; no choice was left to the Carthaginians but to show unconditional submission to Rome. The camarilla would have nothing to do with Hannibal - such a man was too inconveniently great for court cabals; and, after having tried all sorts of absurd expedients, such as accusing the general, with whose name the Romans frightened their children, of concert with the Roman envoys, they succeeded in persuading Antiochus the Great, who like all insignificant monarchs plumed himself greatly on his independence and was influenced by nothing so easily as by the fear of being ruled, into the wise belief that he ought not to allow himself to be thrown into the shade by so celebrated a man. Accordingly it was in solemn council resolved that the Phoenician should be employed in future only for subordinate enterprises and for giving advice - with the reservation, of course, that the advice should never be followed. Hannibal revenged himself on the rabble, by accepting every commission and brilliantly executing all.
In Asia Cappadocia adhered to the great-king; Prusias of Bithynia on the other hand took, as always, the side of the stronger. King Eumenes remained faithful to the old policy of his house, which was now at length to yield to him its true fruit. He had not only persistently refused |the offers of Antiochus, but had constantly urged the Romans to a war, from which he expected the aggrandizement of his kingdom. The Rhodians and Byzantines likewise joined their old allies. Egypt too took the side of Rome and offered support in supplies and men; which, however, the Romans did not accept.
In Europe the result mainly depended on the position which Philip of Macedonia would take up. It would have been perhaps the right policy for him, notwithstanding all the injuries or shortcomings of the past, to unite with Antiochus. But Philip was ordinarily influenced not by such considerations, but by his likings and dislikings; and his hatred was naturally directed much more against the faithless ally, who had left him to contend alone with the common enemy, had sought merely to seize his own share in the spoil, and had become a burdensome neighbour to him in Thrace, than against the conqueror, who had treated him respectfully and honourably. Antiochus had, moreover, given deep offence to the hot temper of Philip by the setting up of absurd pretenders to the Macedonian crown, and by the ostentatious burial of the Macedonian bones bleaching at Cynoscephalae. Philip therefore placed his whole force with cordial zeal at the disposal of the Romans.
The second power of Greece, the Achaean league, adhered no less decidedly than the first to the alliance with Rome. Of the smaller powers, the Thessalians and the Athenians held by Rome; among the latter an Achaean garrison introduced by Flamininus into the citadel brought the patriotic party, which was pretty strong, to reason. The Epirots exerted themselves to keep on good terms, if possible, with both parties. Thus, in addition to the Aetolians and the Magnetes who were joined by a portion of the neighbouring Perrhaebians, Antiochus was supported only by Amynander, the weak king of the Athamanes, who allowed himself to be dazzled by foolish designs on the Macedonian crown; by the Boeotians, among whom the party opposed to Rome was still at the helm; and in the Peloponnesus by the Eleans and Messenians, who were in the habit of taking part with the Aetolians against the Achaeans. This was indeed a hopeful beginning; and the title of commander-in-chief with absolute power, which the Aetolians decreed to the great-king, seemed insult added to injury. There had been, just as usual, deception on both sides. Instead of the countless hordes of Asia, the king brought up a force scarcely half as strong as an ordinary consular army; and instead of the open arms with which all the Hellenes were to welcome their deliverer from the Roman yoke, one or two bands of klephts and some dissolute civic communities offered to the king brotherhood in arms.
For the moment, indeed, Antiochus had anticipated the Romans in Greece proper. Chalcis was garrisoned by the Greek allies of the Romans, and refused the first summons but the fortress surrendered when Antiochus advanced with all his force; and a Roman division, which arrived too late to occupy it, was annihilated by Antiochus at Deliurn. Euboea was thus lost to the Romans. Antiochus still made even in winter an attempt, in concert with the Aetolians and Athamanes, to gain Thessaly; Thermopylae was occupied, Pherae and other towns were taken, but Appius Claudius came up with 2000 men from Apollonia, relieved Larisa, and took up his position there. Antiochus, tired of the winter campaign, preferred to return to his pleasant quarters at Chalcis, where the time was spent merrily, and the king even, in spite of his fifty years and his warlike schemes, wedded a fair Chalcidian. So the winter of 562-3 passed, without Antiochus doing much more than sending letters hither and thither through Greece: he waged the war - a Roman officer remarked - by means of pen and ink.