How did the two rivals antony and octavian cooperate at first?

Initially, Antony and Octavian cooperated after the assassination of Julius Caesar in 44 BCE by forming the Second Triumvirate alongside Lepidus. This alliance enabled them to consolidate power and eliminate their enemies, particularly the assassins of Caesar. They worked together to defeat Brutus and Cassius at the Battle of Philippi in 42 BCE. However, their cooperation was fraught with tension, ultimately leading to a breakdown in their relationship and a power struggle.