The following is from Wikipedia:
Citizen and commander
His father’s service to Rome, on a notoriously difficult frontier, was honoured with the gift of Roman citizenship for him and his family.
His son Lusius later joined the Roman army and served as an auxiliary officer in the Roman cavalry.
For outstanding service, emperor Domitian rewarded him with equestrian rank but later had him dismissed from service for insubordination.
Quietus’s fortunes were revived once again when a new emperor, Trajan, came to power.
After the successful conquest of Dacia, Quietus was elevated to the position of senator.
He next served with the emperor during his campaign in Parthia during which he led a brilliant rearguard action, which allowed the tactical withdrawal of troops and saved them from destruction.
This action brought Quietus acclaim and ensured he was well known to the army.
When the inhabitants of Babylonia revolted, they were suppressed by Quietus, who was now rewarded by being appointed governor of Judaea.
Major revolts by diasporic Jews in Cyrene (Cyrenaica), Cyprus, Mesopotamia, and Egypt resulted in the ransacking of towns and the slaughter of Roman citizens and others by the Jewish rebels, a conflict now known as the Kitos War, after a simplified version of Quietus’s name.
Quietus took the city of Lydda and methodically set about defeating the rebellions.
The emperor Trajan died later in the year and was succeeded by Hadrian and the rebellion in Judea was finally crushed by Quietus.
Quietus was murdered later in the year (118 AD) and it has been theorized that Quietus was executed on the orders of the new emperor, Hadrian, for fear of Quietus’ popular standing with the army and his close connections to Trajan.
Talmudic tradition also relates that the Roman general who caused the rebellious Jews such misery at this time was suddenly executed