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
Ecbatana the tell in support of arcaheology, though actual excavation did not begin until 1983. By 2007, 12 seasons of excavation had occurred. The work on the tell is ongoing. The Greeks thought Ecbatana to be the capital of the Medes empire and credited its foundation to Deioces (the "Daiukku" of the cuneiform inscriptions). It is alleged that he surrounded his palace in Ecbatana with seven concentric walls of different colours. In the 5th century BC, Herodotus wrote of Ecbatana: "The Medes built the city now called Ecbatana, the walls of which are of great size and strength, rising in circles