 Propraetors had the power to command one army, whereas proconsuls had the power to command two armies.In 307 BC, Quintus Fabius Maximus Rullianus, who was consul the previous year, was elected as proconsul to conduct the campaign in Samnium.During the Third Samnite War (298–290 BC) the consuls of the previous year, Quintus Fabius Maximus Rullianus and Publius Decius Mus, were given a six-month extension of their authority to carry on the war in Samnium.