Arrian

“ In the march he despatched Panegorus, son of Lycagoras, one of the Companions, to take possession of the city of Priapus, which was surrendered by the inhabitants.
The Persian generals were Arsames, Rheomithres, Petines, Niphates, and with them Spithridates, viceroy of Lydia and Ionia, and Arsites, governor of the Phrygia near the Hellespont. These had encamped near the city of Zeleia with the Persian cavalry and the Grecian mercenaries. When they were holding a council about the state of affairs, it was reported to them that Alexander had crossed (the Hellespont) . ”

“ Before the arrival of Alexander, he had succeeded in checking the advance of Parmenio and Callas. If Memnon had lived and his advice been adopted by Darius, the fate of Persia might have been very different. Cf. Plutarch (Life of Alex., 18) . ↑ Diodorus (xvii. 18) says that Memnon, while advising the Persian generals to lay waste the country, and to prevent the Macedonians from advancing through scarcity of provisions, also urged them to carry a large force into Greece and Macedonia, and thus transfer the war into Europe. ”

“ He now sent scouts before the army under the command of Arayntas, son of Arrhabaeus, who had the squadron of the Companion cavalry which came from Apollonia, [6] under the captain Socrates, son of Sathon, and four squadrons of what were called Prodromi (runners forward) . ”