Wars of the Diadochi
Alexander’s death was the catalyst for the disagreements that ensued between his former generals resulting in a succession crisis. Two main factions formed after the death of Alexander. The first of these was led by Meleager, who supported the candidacy of Alexander's half-brother, Arrhidaeus. The second was led by Perdiccas, the leading cavalry commander, who believed it would be best to wait until the birth of Alexander's unborn child, by Roxana. Both parties agreed to a compromise, wherein Arrhidaeus would become king as Philip III and rule jointly with Roxana's child, providing it was a male heir. Perdiccas was designated as regent of the empire, with Meleager acting as his lieutenant. However, soon after, Perdiccas had Meleager and the other leaders who had opposed him murdered, and he assumed full control.
The generals who had supported Perdiccas were rewarded in the partition of Babylon by becoming satraps of the various parts of the empire. Ptolemy received Egypt; Laomedon received Syria and Phoenicia; Philotas took Cilicia; Peithon took Media; Antigonus received Phrygia, Lycia and Pamphylia; Asander received Caria; Menander received Lydia; Lysimachus received Thrace; Leonnatus received Hellespontine Phrygia; and Neoptolemus had Armenia. Macedon and the rest of Greece were to be under the joint rule of Antipater, who had governed them for Alexander, and Craterus, a lieutenant of Alexander. Alexander's secretary, Eumenes of Cardia, was to receive Cappadocia and Paphlagonia.
The Wars of the Diadochi, or Wars of Alexander's Successors, were a series of conflicts that were fought between the generals of Alexander the Great, known as the Diadochi, over who would rule his empire following his death. The fighting occurred between 322 and 281 BC.