Mark Antony
After Caesar's assassination, Antony, left as sole Consul, surrounded himself with a bodyguard of Caesar's veterans. He forced the senate to transfer to him the province of Cisalpine Gaul, at the time administered by Brutus, one of the conspirators. Brutus refused to surrender the province and Antony set out to attack him in the beginning of 43 BC, besieging him at Mutina.