The Roman–Parthian War of 161–166 was fought between the Roman and Parthian Empires over Armenia and Upper Mesopotamia. It concluded in 166 after the Romans made successful campaigns into Lower Mesopo
Busts of the co-emperors Marcus Aurelius (left) and Lucius Verus (right), British Museum
Antioch from the southwest (engraving by William Miller after a drawing by H. Warren from a sketch by Captain Byam Martin, R.N., 1866)
The Euphrates river near Raqqa, Syria
Lucius Verus' apotheosis from Ephesus (the so-called Parthian Monument; today in Ephesos Museum in Wien).
Legio II Adiutrix was a legion of the Imperial Roman army founded in AD 70 by the emperor Vespasian, originally composed of Roman navy marines of the classis Ravennatis. There are still records of II
II Adiutrix supported Septimius Severus, commander of the Pannonian army, in his fight for the purple. This denarius was struck to celebrate the legion.