These hopes might have been realized, if the conqueror of Italy had not been seasonably recalled to the defence of the East. 63 While Chosroes pursued his ambitious designs on the coast of the Euxine, Belisarius, at the head of an army without pay or discipline, encamped beyond the Euphrates, within six miles of Nisibis. He meditated, by a skilful operation, to draw the Persians from their impregnable citadel, and improving his advantage in the field, either to intercept their retreat, or perhaps to enter the gates with the flying Barbarians. He advanced one day’s journey on the territories of Persia, reduced the fortress of Sisaurane, and sent the governor, with eight hundred chosen horsemen, to serve the emperor in his Italian wars. He detached Arethas and his Arabs, supported by twelve hundred Romans, to pass the Tigris, and to ravage the harvests of Assyria, a fruitful province, long exempt from the calamities of war. But the plans of Belisarius were disconcerted by the untractable spirit of Arethas, who neither returned to the camp, nor sent any intelligence of his motions. The Roman general was fixed in anxious expectation to the same spot; the time of action elapsed, the ardent sun of Mesopotamia inflamed with fevors the blood of his European soldiers; and the stationary troops and officers of Syria affected to tremble for the safety of their defenceless cities. Yet this diversion had already succeeded in forcing Chosroes to return with loss and precipitation; and if the skill of Belisarius had been seconded by discipline and valor, his success might have satisfied the sanguine wishes of the public, who required at his hands the conquest of Ctesiphon, and the deliverance of the captives of Antioch. At the end of the campaign, he was recalled to Constantinople by an ungrateful court, but the dangers of the ensuing spring restored his confidence and command; and the hero, almost alone, was despatched, with the speed of post-horses, to repel, by his name and presence, the invasion of Syria. He found the Roman generals, among whom was a nephew of Justinian, imprisoned by their fears in the fortifications of Hierapolis. But instead of listening to their timid counsels, Belisarius commanded them to follow him to Europus, where he had resolved to collect his forces, and to execute whatever God should inspire him to achieve against the enemy. His firm attitude on the banks of the Euphrates restrained Chosroes from advancing towards Palestine; and he received with art and dignity the ambassadors, or rather spies, of the Persian monarch. The plain between Hierapolis and the river was covered with the squadrons of cavalry, six thousand hunters, tall and