Instead of spreading themselves wide, raising the natives, and leaving them to blockade the towns, while with their as yet unconquered squandrons they defied the enemy in the open country, we find them engaging in the siege and blockade of cities, for which they were wholly unfit, and confining themselves almost entirely to the narrow valley of the Orontes. Under these circumstances we are not surprised to learn that Cassius, having first beat them back from Antioch, contrived to lead them into an ambush on the banks of the river, and severely handled their troops, even killing the general Osaces. The Parthians withdrew from the neighborhood of the Syrian capital after this defeat, which must have taken place about the end of September, and soon afterwards went into winter quarters in Oyrrhestica, or the part of Syria immediately east of Amanus. Here they remained during the winter months under Pacorus, and it was expected that the war would break out again with fresh fury in the spring; but Bibulus, the new proconsul of Syria, conscious of his military deficiencies, contrived to sow dissensions among the Parthians themselves, and to turn the thoughts of Pacorus in another direction. He suggested to Ornodapantes, a Parthian noble, with whom he had managed to open a correspondence, that Pacorus would be a more worthy occupant of the Parthian throne than his father, and that he would consult well for his own interests if he were to proclaim the young prince, and lead the army of Syria against Orodes. These intrigues seem, to have first caused the war to languish, and then produced the recall of the expedition. Orodes summoned Pacorus to return to Parthia before the plot contrived between him and the Romans was ripe for execution; and Pacorus felt that no course was open to him but to obey. The Parthian legions recrossed the Euphrates in July, B.C. 50; and the First Roman War, which had lasted a little more than four years, terminated without any real recovery by the Romans of the laurels that they had lost at Carrhae. CHAPTER XII. _Relations of Orodes with Pompey, and with Brutus and Cassius. Second War with Rome. Great Parthian Expedition against Syria, Palestine, and Asia Minor. Defeat of Saxa. Occupation of Antioch and Jerusalem. Parthians driven out of Syria by Ventidius. Death of Pacorus. Death of Orodes._ The civil troubles that had seemed to threaten Parthia from the ambition of the youthful Pacorus passed away without any explosion. The son showed his obedience by returning home submissively when he might have flown to arms; and the father accepted the act of obedience as a sufficient indication that no rebellion had been seriously meant. We find Pacorus not only allowed to live, but again entrusted a few years later with high office by the Parthian monarch; and on this occasion we find him showing no signs of disaffection or discontent.