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
Heavy infantry Heavy infantry Heavy infantry refers to heavily armed and armoured infantrymen trained to mount frontal assaults and/or anchor the defensive center of a battle line. This differentiates them from light infantry which are relatively mobile and lightly armoured skirmisher troops intended for screening, scouting, and other roles unsuited to the heavier soldiers. Heavy infantry typically make use of dense battlefield formations, such as shield wall or phalanx, multiplying their effective weight of arms with weight of numbers. Heavy infantry were critical to many ancient armies, such as the Greek hoplites, Macedonian phalangites, and Roman legionaries. After the fall of Rome,