Ah, the triumphant expression and glory of Plutarch! The Golden Age of heroic grandeur and overvaulting hubris as instilled within the immortal figures of Romulus, Theseus, Camillus, Julius Caesar, Pompey the Great, Alexander III of Macedonia, Lycurgus, Pericles, Solon, Eumenes of Caria, Quintus Sertorius, Gaius Marius, Sulla, King Pyrrhus of Epirus, Cimon, Galba, Otho, Vitellius, etc.


King Pyrrhus of Epirus lived from 319-272 B.C.E and ruled as autocrat and hegemon of Epirus from 306-302 B.C.E and 297-272 B.C.E. Pyrrhus of Epirus fought at the great battle of Ipsus on 301 B.C.E in the Diadochian Wars of Successon after the abjuration of the Alexandrian Empire. Pyrrhus reclaimed his throne, ruled initially in a dyarchy [diarchy] with Neoptolemus and after the death of his co-ruler in the ephemeral duumvirate became sole sovereign of the Epirote Kingdom.
[Tribal entities such as the Thresprotians and Molossians]
King Pyrrhus of Epirus with succor from Lysimachus [Lysimachus exerted hegemony in Thrace, Hellespontine Phrygia, Ionia and over the towns of Selymbria, Perinthus and Byzantium] drove out Demetrius I 'Poliorcetes' [son of Antigonus I 'Monopthalmus'] from Thessalonica and Macedonia proper. In turn, Lysimachus expelled King Pyrrhus of Epirus from Macedonia proper.


Following on a plea from the Greek cleruchies or "colonies" in Magna Graecia or "Greater Greece" in southern Italy such as from the Tarentines, King Pyrrhus of Epirus invaded the Roman Republic in the conflict of the Pyrrhic Wars that lasted from 280-275 B.C.E. King Pyrrhus of Epirus' army was a mixed conglomerate: Epirote heavy phalangists in phalangiarchies; Macedonian pezhetairoi; Greek auxiliaries; peltasts or skirmishers; hypaspists; units of pachyderms or war elephants; cataphracts or heavily armored horsemen as utilized by the Medio-Achaemenid Dynasty of Persia, the Arche Seleukia or the Seleucid Empire, the Antigonid Dynasty, the Ptolemaic Dynasty, Graeco-Bactria, the Arsacids of Parthia, the Antipatrids, the Kingdoms of Pontus and Cappadocia, the Attalids of the Pergamene Kingdom, by the future Tigranes II 'Eupator' of the Greater Armenian Empire, and by the Indo-Greeks of Demetrius I 'Aniketos' and Menander I 'Soter'; the Hetairoi or the Companion Cavalry; Epirote auxiliaries; and levied field contingents.


The Pyrrhic Wars of 280-275 B.C.E consisted of the main battles of Heraclea in 280 B.C.E, Ausculum in 279 B.C.E and Beneventum in 275 B.C.E. King Pyrrhus of Epirus also invaded Sicily and managed to subjugate almost the entirety of Sicily but failed to wrest control of Lilybaeum from the Carthaginians. At the conclusion of this conflict, King Pyrrhus of Epirus lost all his Sicilian and Italian holdings after his departure from the Italian mainland. In 272 B.C.E, the Epirote garrison capitulated to the besieging Romans alongside with the entirety of Magna Graecia. In 270 B.C.E, the Roman Republic held hegemonic control from the Po River in the north to Magna Graecia in the south. Finally, King Pyrrhus of Epirus was killed in his military campaigns in the Peloponnesus.


I hope my explanations have taught the nature of Hellenistic warfare during the conflicts of the Epigonoi and of the historical figure of King Pyrrhus of Epirus.