Ancient Macedonian army at 4,500, asserting it was closer to 5,100 horsemen. The army led by Alexander the Great into the Persian Empire included Greek heavy infantry in the form of allied contingents provided by the League of Corinth and hired mercenaries. These infantrymen would have been equipped as hoplites with the traditional hoplite panoply consisting of a thrusting spear ("doru"), bronze-faced "hoplon" shield and body armour. In appearance, they would have been almost identical to the hypaspists. In battle, the Greek hoplites had a less active role than the Macedonian phalangites and hypaspists. At Gaugamela, the Greek infantry formed the defensive rear
Thracian warfare endured between the 5th century BC and the 3rd century BC. The Odrysian state was the first Thracian kingdom that acquired power in the region, by the unification of many Thracian tribes under a single ruler, King Teres 5th century BC. It became involved in wars and military conflicts against the Romans, Greek colonies, the kingdom of Macedon and the Diadochi, the Persian Empire, Paeonians, Dacians, Celts, Scythians and Thracian tribes. Sometimes it was allied with various Ancient Greek tribes or Greek city states. During the Peloponnesian war, Thracians were the allies of Athens. The Thracians fought alongside Athenians and