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
Lucullus Retreats to Mesopotamia - Capture of Nisibus
A formal mutiny compelled the general to order a retreat, which he effected with his usual skill. When he had safely reached Mesopotamia where the season still permitted farther operations, Lucullus crossed the Tigris, and threw himself with the mass of his army on Nisibis, the last city that here remained to the Armenians. The great-king, rendered wiser by the experience acquired before Tigranocerta, left the city to itself: notwithstanding its brave defence it was stormed in a dark, rainy night by the besiegers, and the army of Lucullus found there booty not less rich and winter- quarters not less comfortable than the year before in Tigranocerta.
Conflicts in Pontus and at Tigranocerta
But, meanwhile, the whole weight of the enemy's offensive fell on the weak Roman divisions left behind in Pontus and in Armenia. Tigranes compelled the Roman commander of the latter corps, Lucius Fannius--the same who had formerly been the medium of communication between Sertorius and Mithradates (18)--to throw himself into a fortress, and kept him beleaguered there.
18. Cf. V. II. Preparations of Mithradates, 328, 334
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