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
Chiefly a pastoral people they tended, on foot or on horseback, their numerous herds in the luxuriant meadows of the modern Shirvan; their few tilled fields were still cultivated with the old wooden plough without iron share. Coined money was unknown, and they did not count beyond a hundred. Each of their tribes, twenty-six in all, had its own chief and spoke its distinct dialect. Far superior in number to the Iberians, the Albanians could not at all cope with them in bravery. The mode of fighting was on the whole the same with both nations; they fought chiefly with arrows and light javelins, which they frequently after the Indian fashion discharged from their lurking-places in the woods behind the trunks of trees, or hurled down from the tops of trees on the foe; the Albanians had also numerous horsemen partly mailed after the Medo-Armenian manner with heavy cuirasses and greaves.
Both nations lived on their lands and pastures in a complete independence preserved from time immemorial. Nature itself as it were, seems to have raised the Caucasus between Europe and Asia as a rampart against the tide of national movements; there the arms of Cyrus and of Alexander had formerly found their limit; now the brave garrison of this partition-wall set themselves to defend it also against the Romans.
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Reference address : https://www.ellopos.net/elpenor/rome/5-04-pompeius-east.asp?pg=18