Lucius Papirius Crassus was appointed dictator in 340 BC by Titus Manlius Torquatus after the death of Publius Decius Mus in the Battle of Vesuvius and the failing health of Titus Manlius Torquatus. Following his appointment as dictator, Lucius Papirius Crassus appointed Lucius Papirius Castor as his Master of Horse. The people of Antium soon began conducting raids against the farmlands of Ostia, Ardea, and Solonium but no significant advantages were gained by Lucius Papirius against these people.