He also took over a spring at the place.[6] Ardashir I's forces numbered 10,000 cavalry, with some of them wearing flexible chain armor akin to that of the Romans.[1] Artabanus IV led a greater number of soldiers, who, however, were less disposed, due to wearing the inconvenient lamellar armor.[1] Ardashir I's son and heir, Shapur, as portrayed in the Sasanian rock reliefs, also took part in the battle.[7] The battle was fought on 28 April 224, with Artabanus IV being defeated and killed, marking the end of the Arsacid era and the start of 427-years of Sasanian rule.[1]