Campaigns of Alexander the Great [352-334BC]
On July 20, 356 BC, Philip's second wife, Olympias, gave birth to Philip II. son Alexander, the future successor of Philip and the legendary conqueror of Asia Alexander the Great (Greek Alexandros Megalo).
Persian King Darius III assembled a huge army in Babylon, estimated by some ancient historians to perhaps 600,000 soldiers. According to sober estimates, Darius III pulled out. against Alexander with 200,000 infantry and 10,000 cavalry. He encamped with a huge army in northwestern Syria on a plain near Sochoi, north of present-day Tripoli. in Lebanon
Alexander and his army crossed the predatory current of the Tigris River and thus overcame a natural obstacle between him and the army commanded by Darius III (Darayavas). Here, on the banks of the river, he gave his soldiers a well-deserved rest. It was the fourth year since he entered Asian soil.