The exact year of Eurydice's birth is unknown, but as her uncle Alexander the Great killed her father shortly after Philip II's assassination, it is unlikely that she was born after 335 BCE.
[2][3] She accompanied her mother on her daring expedition to Asia to meet Alexander the Great's troops after his death, with the hope of marrying Eurydice to Philip III.
[5] However, the discontent expressed by the troops, and the respect with which they looked on Eurydice as one of the surviving members of the royal house, induced the imperial regent, Perdiccas, not only to spare her life, but to give her in marriage to King Philip Arrhidaeus, Alexander the Great's half-brother and successor to the throne of Macedon.
[8] Her ties to the Macedonian army, and her status as king's wife, helped her gain influence and succeeded briefly in becoming a sort of de facto regent.
In an attempt to forestall this and retain command over the Macedonian army, Eurydice spoke in public to the assembled soldiery, who were restless due to Antipater's inability to pay them.
But the death of Antipater in 319 BC, the more feeble character of Polyperchon, who succeeded him as regent, and the failure of his enterprises in Greece, and above all, the favourable disposition he evinced towards Olympias, determined her again to take an active part: she concluded an alliance with Cassander.
[7] As Cassander was still fighting in Peloponnese, Eurydice assembled an army and Polyperchon advanced against her from Epirus, accompanied by Aeacides, the king of that country, Olympias, Roxana and the young Alexander IV of Macedon.
[18] Additionally, the presence of military items and Amazonian imagery near the female's burial site imply that she was buried as a warrior, though some scholars argue that the weaponry is in honor of the male and there is no evidence that Eurydice ever fought on the battlefield.