 Then he asked for proconsular "imperium" in Hispania, to deal with the populares general Quintus Sertorius, who had held out for the past three years against Quintus Caecilius Metellus Pius, one of Sulla's most able generals.Pompey's career seems to have been driven by desire for military glory and disregard for traditional political constraints.Pompey served next to Crassus and Julius Caesar as part of the first triumvirate of Rome, however, before this, the Roman aristocracy turned him down— as they were beginning to fear the young, popular and successful general.