Chronological analysis of the strengthening of Octavius compared with the errors made by Antony. DATE (BC) Factors affecting Antony Factors affecting Octavius 42BC Battle of Philippi. With Lepidus, Antony led an armed force into Macedonia to face the conspirators who killed Caesar. The "Republican" conspirators had 19 legions at their command (about 120000 men), against the triumvir's 28 legions (about 170000). The triumvirs won resoundingly, and the leaders (Brutus and Cassius) committed suicide. Triumvirs firmly in control of Roman Government. Lepidus, the weaker triumvir, was clearly friendly towards Antony. This is exemplified by his full support against