At the Battle of Philippi in 42 BCE, the triumvirs Antony and Octavian defeated the forces led by

Explanation

At Philippi, Antony and Caesar's adopted heir fought the armies of the assassins Brutus and Cassius, who were decisively defeated and died in the aftermath. The sons of Caesar's former rival, Antony's brother, and Lepidus did not command the opposition at this battle.