October 3 - First Battle of Philippi: The TriumvirsMark Antony and Octavian fight an indecisive battle with Caesar's assassins Marcus Junius Brutus and Cassius. Although Brutus defeats Octavian, Antony defeats Cassius, who committed suicide.
October 23 - Second Battle of Philippi: Brutus' army is decisively defeated by Antony and Octavian, he committed suicide soon after.