Battle of Philippi
After his father was murdered in 43 BC on the orders of Mark Antony, Cicero joined up with the army of Liberatores led by Cassius and Brutus. Brutus had recruited Cicero to help keep Greece under control. After their defeat at the Battle of Philippi in 42 BC, Octavian pardoned Cicero and they worked together in the forthcoming struggle against Antony. Cicero subsequently became an augur.