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
Military Pacification of Syria
But, to establish the new Roman government and introduce any tolerable order into the confusion of affairs, it was further necessary to advance into Syria with a military force and to terrify or subdue all the disturbers of the peace, who had sprung up during the many years of anarchy, by means of the Roman legions. Already during the campaigns in the kingdom of Pontus and on the Caucasus Pompeius had turned his attention to the affairs of Syria and directed detached commissioners and corps to interfere, where there was need. Aulus Gabinius--the same who as tribune of the people had sent Pompeius to the east--had in 689 marched along the Tigris and then across Mesopotamia to Syria, to adjust the complicated affairs of Judaea.
In like manner the severely pressed Damascus had already been occupied by Lollius and Metellus. Soon afterwards another adjutant of Pompeius, Marcus Scaurus, arrived in Judaea, to allay the feuds ever breaking out afresh there. Lucius Afranius also, who during the expedition of Pompeius to the Caucasus held the command of the Roman troops in Armenia, had proceeded from Corduene (the northern Kurdistan) to upper Mesopotamia, and, after he had successfully accomplished the perilous march through the desert with the sympathizing help of the Greeks settled in Carrhae, brought the Arabs in Osrhoene to submission.
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Reference address : https://www.ellopos.net/elpenor/rome/5-04-pompeius-east.asp?pg=40