Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Fresh Conflicts with the Albanians
For several days the Roman army had to march in the glowing heat through this almost waterless flat country, without encountering the enemy; it was only on the left bank of the Abas (probably the river elsewhere named Alazonius, now Alasan) that the force of the Albanians under the leadership of Coses, brother of the king Oroizes, was drawn up against the Romans; they are said to have amounted, including the contingent which had arrived from the inhabitants of the Transcaucasian steppes, to 60,000 infantry and 12,000 cavalry. Yet they would hardly have risked the battle, unless they had supposed that they had merely to fight with the Roman cavalry; but the cavalry had only been placed in front, and, on its retiring, the masses of Roman infantry showed themselves from their concealment behind.
After a short conflict the army of the barbarians was driven into the woods, which Pompeius gave orders to invest and set on fire. The Albanians thereupon consented to make peace; and, following the example of the more powerful peoples, all the tribes settled between the Kur and the Caspian concluded a treaty with the Roman general. The Albanians, Iberians, and generally the peoples settled to the south along, and at the foot of, the Caucasus, thus entered at least for the moment into a relation of dependence on Rome. When, on the other hand, the peoples between the Phasis and the Maeotis--Colchians, Soani, Heniochi, Zygi, Achaeans, even the remote Bastarnae--were inscribed in the long list of the nations subdued by Pompeius, the notion of subjugation was evidently employed in a manner very far from exact. The Caucasus once more verified its significance in the history of the world; the Roman conquest, like the Persian and the Greek, found its limit there.
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Reference address : https://www.ellopos.net/elpenor/rome/5-04-pompeius-east.asp?pg=22