In Cisalpine Gaul Antony ordered Decimus Brutus to withdraw to Macedonia in obedience to the decree of the Roman people, and for his own good. Decimus, in reply, sent him the letters that had been furnished him by the Senate, as much as to say that he cared no more for the command of the people than Antony did for that of the Senate. Antony then fixed a day for his compliance, after which he should treat him as an enemy. Decimus advised him to fix a later day lest he (Antony) should too soon make himself an enemy to the Senate. Although Antony could have easily overcome him, as he was still in the open country, he decided to proceed first against the cities. These opened their gates to him. Decimus, fearing lest none of them should be opened to him, fabricated letters from the Senate calling him to Rome with his army and retired towards Italy, welcomed by all as he passed along, until he arrived at the wealthy city of Mutina.1 Here he closed the gates and possessed himself of the property of the inhabitants for the support of his army. He slaughtered and salted all the cattle he could find there in anticipation of a long siege, and he awaited Antony. His army consisted of a large number of gladiators and three legions of infantry, one of which was composed of new recruits as yet inexperienced. The other two had served under him before and were entirely trustworthy. Antony advanced against him with fury, drew a line of circumvallation around Mutina, and laid siege to Decimus.