After the composition of the last speech, Octavius, considering that he had reason to be offended with Antonius, formed a plot for his assassination by means of some slaves, which however was discovered.  In the mean time Antonius began to declare more and more openly against the conspirators.  He erected a statue in the forum to Caesar, with the inscription, “To the most worthy Defender of his Country.”  Octavius at the same time was trying to win over the soldiers of his uncle Julius, and out-bidding Antonius in all his promises to them, so that he soon collected a formidable army of veterans.  But as he had no public office to give him any colour for this conduct, he paid great court to the republican party, in hopes to get his proceedings authorized by the senate; and he kept continually pressing Cicero to return to Rome and support him.  Cicero, however, for some time kept aloof, suspecting partly his abilities, on account of his exceeding youth, and partly his sincerity in reconciling himself to his uncle’s murderers; however, at last he returned, after expressly stipulating that Octavius should employ all his forces in defence of Brutus and his accomplices.

Antonius left Rome about the end of September, in order to engage in his service four legions of Caesar’s, which were on their return from Macedonia.  But when they arrived at Brundusium three of them refused to follow him, on which he murdered all their centurions, to the number of three hundred, who were all put to death in his lodgings, in the sight of himself and Fulvia his wife, and then returned to Rome with the one legion which he had prevailed on; while the other three legions declared as yet for neither party.  On his arrival in Rome he published many very violent edicts, and summoned the senate to meet on the twenty-fourth of October; then he adjourned it to the twenty-eighth; and a day or two before it met, he heard that two out of the three legions had declared for Octavius, and encamped at Alba.  And this news alarmed him so much, that he abandoned his intention of proposing to the senate a decree to declare Octavius a public enemy, and after distributing some provinces among his friends, he put on his military robes, and left the city to take possession of Cisalpine Gaul, which had been assigned to him by a pretended law of the people, against the will of the senate.

On the news of his departure Cicero returned to Rome, where he arrived on the ninth of December.  He immediately conferred with Pansa, one of the consuls elect, (Hirtius his colleague was ill,) as to the measures to be taken.  He was again addressed with earnest solicitations by the friends of Octavius, who, to confirm his belief in his good intentions, allowed Casca, who had been one of the slayers of Caesar, and had himself given him the first blow, to enter on his office as tribune of the people on the tenth of December.