Cicero's plan to drive out Antony failed, however. After the successive battles of Forum Gallorum and Mutina, Antony and Octavian reconciled and allied with Lepidus to form the Second Triumvirate. Immediately after legislating their alliance into official existence for a five-year term with consular "imperium", the Triumvirate began proscribing their enemies and potential rivals. Cicero and his younger brother Quintus Tullius Cicero, formerly one of Caesar's legati, and all of their contacts and supporters were numbered among the enemies of the state though, reportedly, Octavian argued for two days against Cicero being added to the list.