Tigranes’ kingdom of Armenia had previously been, like so many others, a province of the Syrian kingdom, and its governor had asserted his independence under Antiochus the Great. Tigranes had extended it on every side and had increased it by fragments taken from the Syrian kingdom which was now falling into ruins, whilst princes of the house of the Seleucidæ quarrelled over its remains. From the year 83 Syria and Cilicia appear as Armenian provinces under Armenian governors. But the great king Tigranes himself held his gorgeous court in eastern fashion at Tigranocerta near the borders of Mesopotamia. It was one of those gigantic cities rapidly built and filled at the bidding of a despot, the ruins of which are to be found in the East scattered here and there as witnesses to the evanescent character of despotic creations.
In earlier times the Roman government would not have so long delayed showing this despot his proper place. Lucullus, contrary to the will of the government now carried the war into Tigranes’ territory, demanding from the great ruler that he should deliver up Mithridates. This was suggested by Appius Claudius, whose bold speech filled the barbarian ruler with astonishment. He was furious and enraged that Lucullus did not give him his title of “King of Kings,” but only addressed him as king, and avenged himself by refusing the title of “imperator” to the Roman, and making common cause with Mithridates whom he had not previously admitted to his presence.
Lucullus led his unwilling army, of which the Fimbrian legions after thirteen campaigns were now with some reason demanding to be disbanded, over the Cappadocian Mountains and then across the Euphrates. This was an ill-advised course considering the nature of the Armenian territory and the small numbers and ill-humour of his soldiers who were in no way pleased to be leaving the Pontian district behind them.
Whilst King Tigranes was still rocking himself in the ignorance of an eastern prince and listening to his courtiers’ assurances that the Roman army would never venture to face the hosts of the King of Kings, a messenger arrived to acquaint him with its approach. The messenger who brought the unpleasant news was rewarded by death, but it was none the less true. Mithrobarzanes was given the command of the band now sent against the Romans as punishment for not having joined the flatteries of the courtiers, but he was easily beaten. Tigranes left his capital just before the arrival of the Romans, and reinforcements gradually arrived from the different nations of his kingdom. Their appearance and their numbers—there were Arabians, Syrians, Medes, Adiabenians, Armenians, Iberians, and Albanians from the heights and valleys of the Caucasus—inspired him with confidence. He rejected the counsel of Mithridates, who, from his own experience of the Romans, advised him to avoid a battle and to employ his own superior cavalry to cut off the enemy’s supplies, and the heights around Tigranocerta were soon covered with the king’s army of 150,000 heavy infantry, 20,000 light infantry, and 55,000 mounted men, 17,000 being in coat of mail. Lucullus left 6000 men before the city, and the remainder, who seemed to the king to be too many for an embassy and too few for an army went up the river to find a ford. “There they fly, these invincible Roman hoplites!” exclaimed the king, with confidence. However, he soon afterwards saw to his horror, how the eagle of the first legion wheeled round and then one cohort after another crossed the river in the proud and confident manner of Roman troops. Quickly the king sought to array his followers but it was another barbarian battle, in which the stampede commenced before the troops were ranged in order. Driven back by the first attack and thrown into confusion the masses of men offered a wide target and an easy prey for the swords of the enemy.
The Romans were almost ashamed at their easy victory, for it cost them only five dead and 105 wounded. The enemy’s loss was incalculable. The tiara and diadem of the Armenian king fell into Roman hands; and the city of Tigranocerta had to surrender. It was taken and given over to the soldiers to plunder; some of the heterogeneous population were sent back to their native districts.