Legio II Parthica
Legio secunda Parthica (Second Parthian legion) was a Roman legion levied by Emperor Septimius Severus in 197, for his campaign against the Parthian Empire, hence the cognomen Parthica. The legion was still active in the beginning of the 5th century. The legion's symbol were a bull and centaur.
Read more about Legio II Parthica: Parthian Campaign and Castra Albana (197-4th Century), In Mesopotamia