"[3] An inscription recovered from Thibilis in Numidia,[4] combined with a second from another Numidian town Cirta,[5] allows us to reconstruct his career from its beginning.
[6] Next followed the office of sevir equitum Romanorum or presiding at the annual review of the equites at Rome, then the traditional Republican magistracy of plebeian tribune.
Adventus was picked to serve as legatus or assistant to the proconsular governor of Africa, where he was for a year, until returning to Rome once again to hold a third traditional Republican magistracy, praetor.
[8] From the dona militaria, or military honors, he was awarded fighting against Parthia, it is clear Antistius Adventus saw active service.
His command was included the two newly raised Legiones II and III Italicae, protecting the passes through the Julian Alps from the invading German tribes.
Although the tribes did penetrate the Julian Alps and attempted to capture Aquileia in 170, Birley believes by that time Antistius Adventus had moved on to the position of governor of Germania Inferior, the last post listed for him in the inscription from Thibilis.