election as suffect consul with Quintus Pedius. Pedius' passage of the lex Pedia which sentenced the tyrannicides to exile in absentia changed Plancus' calculations; after a few months of cooperation with Decimus, he broke off. While Antony was angry at Plancus for his having sided with the senate, he was able to parley his five legions and Gallic cavalry into keeping his consulship and a triumph. Under the Triumvirate After Octavian joined with Antony and Lepidus to form the Second Triumvirate in 43 BC through passage of the lex Titia, they and their main allies all gave one close family member of friend to the proscriptions. Plancus is said to have put his brother – Lucius Plotius Plancus – on the death lists. For the victories he won over the Gauls in Raetia, he celebrated a triumph on 29 December 43 BC. Thereafter, he held the consulship of 42 BC with Lepidus. During his consulship, he brought legislation to overturn some of the names on the Second Triumvirate's proscription lists and distributed land to veterans near Beneventum. The next year, he continued supervising colonisation near Beneventum and, during the Perusine War, assisted Lucius Antony in defeating one of Octavian's legions. After the defeat of the plot, he fled with Antony's wife Fulvia to Greece. After the peace of Brundisium in 40 BC healed the rift between Octavian and Antony, he was assigned to Asia pro consule. He likely stayed in Asia through 38 BC. Service under and defection from Antony During Mark Antony's expedition in 36 BC, to Armenia and Parthia to avenge Crassus' death from 17 years earlier, he was proconsular governor (or perhaps legate) of Syria. He was blamed for ordering the execution of Sextus Pompey in Antony's name after Sextus was caught attempting to flee to Parthia via Asia. Plancus deserted Antony's side in 32 BC. The reasons are unclear. Ronald Syme speculated that he did so merely because he calculated Octavian was in the stronger position. However, Octavian's victory was likely not yet clear in 32 BC. Plancus and his nephew Marcus Titius were instrumental in securing for Octavian the contents of Antony's will, which gravely damaged Antony's reputation. Complementary sources, such as Horace's Ode 1.7, praise Plancus for having realised the falsity of Antony's promises and having returned virtuously to the side of Rome and Italy. Under Augustus In January 27 BC, Plancus, as one