(68), and for which he already had put the flower of the troops of the West on the march, partly to Egypt, partly along the Danube, was meant no doubt to push forward the imperial frontier in other directions;[39] but its proper aim was the passes of the Caucasus above Tiflis, and the Scythian tribes settled on the northern slope, in the first instance the Alani.[40] These were just assailing Armenia on the one side and Media on the other. So little was that expedition of Nero directed against the Parthians that it might rather be conceived of as undertaken to help them; overagainst the wild hordes of the north a common defensive action was at any rate indicated for the two civilised states of the West and East. Vologasus indeed declined with equal friendliness the amicable summons of his Roman colleague to visit him, just as his brother had done, at Rome, since he had no liking on his part to appear in the Roman forum as a vassal of the Roman ruler; but he declared himself ready to present himself before the emperor when he should arrive in the East, and the Orientals doubtless, though not the Romans, sincerely mourned for Nero. King Vologasus addressed to the senate officially an entreaty to hold Nero’s memory in honour, and, when a pseudo-Nero subsequently emerged, he met with sympathy above all in the Parthian state. [Sidenote: Arrangements of Vespasian.] Nevertheless the Parthian was not so much concerned about the friendship of Nero as about that of the Roman state. Not merely did he refrain from any encroachment during the crises of the four-emperor-year,[41] but correctly estimating the probable result of the pending decisive struggle, he offered to Vespasian, when still in Alexandria, 40,000 mounted archers for the conflict with Vitellius, which, of course, was gratefully declined. But above all he submitted without more ado to the arrangements which the new government made for the protection of the east frontier. Vespasian had himself as governor of Judaea become acquainted with the inadequacy of the military resources statedly employed there; and, when he exchanged this governorship for the imperial power, not only was Commagene again converted, after the precedent of Tiberius, from a kingdom into a province, but the number of the standing legions in Roman Asia was raised from four to seven, to which number they had been temporarily brought up for the Parthian and again for the Jewish war. While, further, there had been hitherto in Asia only a single larger military command, that of the governor of Syria, three such posts of high command were now instituted there. Syria, to which Commagene was added, retained as hitherto four legions; the two provinces hitherto occupied only by troops of the second order, Palestine and Cappadocia, were furnished, the first with one, the second with two legions.[42] Armenia remained a Roman dependent principality in possession of the Arsacids,