Battle of Ecbatana Antiochus then dispersed his army into their winter quarters. However, the cities soon revolted against their presence. Phraates exploited the situation and attacked him as he marched to reinforce a garrison, inflicting a crushing defeat upon him at the Battle of Ecbatana. During the battle, Antiochus VII was killed and his royal guard was annihilated. After this, the rest of his army was largely destroyed, and the remainder was captured and folded into Parthian ranks. This battle marked the decisive and final defeat for the Seleucid Empire by the Parthians and ended the Hellenistic period in Iran. Battle of Ecbatana
Battle of Ecbatana Battle of Ecbatana The Battle of Ecbatana was fought in 129 BC between the Seleucids led by Antiochus VII Sidetes and the Parthians led by Phraates II. Phraates II (ca. 139/138 BC - ca. 128 BC) faced the final attempt on the part of the Seleucids to regain their power in the east. The Seleucids amassed a large force of Greek mercenaries and led the army, totaling 80,000 soldiers, to confront the Parthians. After initial success, defeating the Parthians in two battles, Phraates sent a delegation to negotiate a peace agreement. However, the Parthians rejected the terms proposed by Antiochus.