In our previous video within this series, we covered the first war between the Successors of Alexander the Great - the Diadochi (322-320 BC) between the alliances led by Perdiccas and Eumenes, and by Ptolemy, Antipater and Antigonus. The second group won the war, but Eumenes managed to gather new allies and challenged Antigonus in the Second War of the Diadochi. Between 317 and 316 BC their armies fought across the modern day Iran in the battles of Coprates, Paraitekene and Gabiene. The new ruler of the Macedonian Empire was decided in these battles.