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
This and other misfortunes--
such as the destruction of a corps of Roman cavalry despatched to
call forth the contingents--imparted to the affairs of the Romans in
the Hither province so unfavourable an aspect that the fortress of
Ocilis, where the Romans had their chest and their stores, passed
over to the enemy, and the Arevacae were in a position to think,
although without success, of dictating peace to the Romans.
These
disadvantages, however, were in some measure counterbalanced by the
successes which Mummius achieved in the southern province. Weakened
though his army was by the disaster which it had suffered, he yet
succeeded with it in defeating the Lusitanians who had imprudently
dispersed themselves on the right bank of the Tagus; and passing
over to the left bank, where the Lusitanians had overrun the whole
Roman territory, and had even made a foray into Africa, he cleared
the southern province of the enemy.
