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
Certainly there remained a section of their opponents, who at least
kept to their colours and were neither to be terrified nor to be won.
The regents had become convinced that exceptional measures,
such as those against Cato and Cicero, did their cause
more harm than good, and that it was a lesser evil to tolerate
an inconvenient republican opposition than to convert their opponents
into martyrs for the republic Therefore they allowed Cato to return
(end of 698) and thenceforward in the senate and in the Forum,
often at the peril of his life, to offer a continued opposition
to the regents, which was doubtless worthy of honour, but unhappily
was at the same time ridiculous.
They allowed him on occasion
of the proposals of Trebonius to push matters once more
to a hand-to-hand conflict in the Forum, and to submit to the senate
a proposal that the proconsul Caesar should be given over
to the Usipetes and Tencteri on account of his perfidious conduct
toward those barbarians.(8)