Having formed the Second Triumvirate, the uneasy alliance of Caesarian commanders had seized control of the Roman Republic in late 43 BC. Establishing control over the Senate and Italy, one clear challenge to their dominance remained, the anti-Caesarian faction of Brutus and Cassius, which had been gaining in strength whilst the Triumvirs had fought amongst themselves. The two great factions met in Greece and over two battles at Philippi fought for control of the Roman Republic. Gareth Sampson focuses on the rise of the new anti-Caesarian faction and the campaigns that led to the two key battles in Greece. As well as analysing the strengths and weakness of the opposing armies and their commanders, along with the tactics used, the two engagements themselves are analysed in the greatest detail permitted by the sources. Thus the reader gains a clear narrative of the actions that culminated in a victory for the Caesarian faction and the martyrdom of Brutus and Cassius. The author also gives attention to the aftermath of the battles which saw the Second Triumvirate split, with Mark Antony seizing control of the Eastern Republic, leaving Octavian, Lepidus and Pompey to battle for control of the West and setting in progress an inevitable march towards another final round of civil war for control of the Republic and the Mediterranean World.