While there, Pyrrhus married Ptolemy’s step daughter Antigone and used the Egyptian King’s financing and military aid to regain his throne in 297 B.C. Pyrrhus then moved the Epirian capital to Ambrakia and began to wage war on Demetrius. At one point during the war, Pyrrhus was challenged to one on one combat against Pantaucus, one of Demetrius’ senior officers, and defeated him. He took Macedonia and was declared king, but the conquest could not be held and Pyrrhus was pushed out by Lysimachus in 285 B.C.
Plutarch tells us what happened next. "At this time, then, when Pyrrhus had been driven back to Epirus and had given up Macedonia, fortune put it into his power to enjoy what he had without molestation, to live in peace, and to reign over his own people. But he thought it tedious to the point of nausea if he were not inflicting mischief on others or suffering it at other's hands and, like Achilles, could not endure idleness."