Plutarch, Eumenes
Bernadotte Perrin, Ed.

5. And when Craterus¹ and Antipater, after overpowering the Greeks,² were crossing into Asia³ to overthrow the power of Perdiccas, and were reported to be planning an invasion of Cappadocia, Perdiccas, who was himself heading an expedition against Ptolemy,⁴ appointed Eumenes commander of the forces in Armenia and Cappadocia with plenary powers. [2] He also sent letters on the subject, in which he commanded Alcetas⁵ and Neoptolemus to look to Eumenes for orders, and Eumenes to manage matters as he thought best. Alcetas, then, flatly refused to serve in the campaign, on the ground that the Macedonians under him were ashamed to fight Antipater, and were so well disposed to Craterus that they were ready to receive him with open arms. Neoptolemus, however, plotting treachery against Eumenes, was detected, and when he was summoned would not obey, but drew up his forces in battle array. [3] Here first did Eumenes reap the fruit of his forethought and preparation; for when his infantry had already been defeated, he routed Neoptolemus with his cavalry, and captured his baggage, and when the men-at-arms of Neoptolemus were scattered in pursuit of their enemies, charged upon them with his entire body of horse and compelled them to lay down their arms and make oath with him to serve under him.

[4] Neoptolemus, then, collected a few of his men from the rout and fled to Craterus and Antipater. But they had already sent an embassy to Eumenes inviting him to come over to their side; he would enjoy possession of his present satrapies, would receive additional troops and territory from them, would become a friend to Antipater instead of an enemy; and would not become an enemy to Craterus instead of a friend. [5] On hearing this proposition Eumenes replied that he had been Antipater's enemy from of old and could not now become his friend, when he saw him treating his friends as enemies, but that he was ready to reconcile Craterus with Perdiccas and bring the two together on just and equal terms; if, however, either undertook to overreach the other he would give aid to the injured party as long as he had breath, and would rather lose his life than his honour.