Five years later, in 390 BC, Servilius was once again made consular tribune, with Quintus Fabius Ambustus, Caeso Fabius Ambustus, Numerius Fabius Ambustus, Quintus Sulpicius Longus and Publius Cornelius Maluginensis as his colleagues. In this year a roving band of marauding Gauls, led by their king Brennus, moved on Rome just after sacking Clusium. The Roman's met the army of Brennus on the field, but their force was completely destroyed, setting the stage for the Sack of Rome which would damage much of the city as well as the pride of Rome, and kill many old Roman patricians, including possibly Servilius' father himself, who reportedly died this year.