公元224年，阿尔达希尔一世击败帕提亚帝国，并以萨珊帝国取而代之。他在泰西封掌握权力之后，几乎随即就开始侵袭罗马领土。230年代早期，亚历山大·塞维鲁对萨珊波斯发动了一场大规模入侵，被波斯军队逐出并蒙受重大伤亡[3]。尼西比斯在235或237年被波斯军队围攻，并最终被占领。
参考资料
- ^ A Companion to the Roman Empire "When Alexander launched a massive invasion of his territory in the early 230s, Ardashir drove it back, inflicting heavy casualties. In 235 he captured the cities of Nisibis and Carrhae"
- ^ The Cambridge Ancient History: Volume 12, The Crisis of Empire, AD 193-337 "the Romans were on the defensive and Ardashir again invaded Roman territory capturing Nisibis and Carrhae (or Harran) in 237 and 238."
- ^ A Companion to the Roman Empire （页面存档备份，存于互联网档案馆） "Ardashir began to raid the Roman territory almost immediately after he had taken power at Ctesiphon, making Roman armies look plodding and inept. When Alexander launched a massive invasion of his territory in the early 230s, Ardashir drove it back, inflicting heavy casualties.
