- They were often involved in political intrigue and conspiracies. - Praetorian guardsmen had considerable influence over the emperor, and they could use this influence to manipulate him or even depose him.
- They were also frequently used to suppress dissent and maintain internal security, which could lead to abuses of power.
- Furthermore, the praetorian guard was seen by some as a threat to the emperor's personal safety.
Here are some specific examples of how the praetorian guard caused problems for emperors:
- In 31 AD, the praetorian guard assassinated Emperor Tiberius, who was succeeded by his nephew Caligula.
- In 69 AD, the praetorian guard revolted against Emperor Galba and killed him, replacing him with Emperor Otho.
- In 193 AD, the praetorian guard murdered Emperor Pertinax, triggering a year-long civil war known as the Year of the Five Emperors.
- In 238 AD, the praetorian guard again revolted against the emperor, this time killing Emperor Gordian III and replacing him with Emperor Pupienus and Balbinus.
- In 285 AD, the praetorian guard betrayed Emperor Carinus by allowing his rival Diocletian to enter Rome unopposed.
The praetorian guard was eventually disbanded by Emperor Constantine I in 312 AD, after he defeated Maxentius at the Battle of the Milvian Bridge.