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
Ancient Greek mercenaries me master and great king". Greek hoplites were widely admired for their skill as soldiers. The demand led many Greeks who faced poverty or exile to enlist as mercenaries in the pay of another state. Others, not so burdened with worry, became mercenaries through a desire for loot and adventure. In many Greek states, including Athens, the threats from Persia and Macedon required strong defensive forces. One of the main problems in creating and maintaining military strength was that peasant citizens could not afford to abandon their smallholdings for long periods of service and so the demand for professional soldiers