Philip II of Macedon

Philip II of Macedon (382-336 BC) was a king (basileus) of the Greek kingdom of Macedon from 359 BC until his assassination in 336 BC. He was the father of Alexander the Great and Philip III. To him is attributed the phrase divide et impera (divide and conquer).

king4-Filip_II_MacedoniaPhilip's military skills and expansionist vision of Macedonian greatness brought him early success. He first had to re-establish a situation which had been greatly worsened by the defeat against the Illyrians in which King Perdiccas himself had died. The Paionians and the Thracians had sacked and invaded the eastern regions of the country, while the Athenians had landed, at Methoni on the coast, a contingent under a Macedonian pretender called Argeus.

Using diplomacy, Philip pushed back the Paionians and Thracians promising tributes, and crushed the 3,000 Athenian hoplites (359). Momentarily free from his opponents, he concentrated on strengthening his internal position and, above all, his army. His most important innovation was doubtless the introduction of the phalanx infantry corps, armed with the famous sarissa, an exceedingly long spear, at the time the most important army corps in Macedonia.

Source: http://en.wikipedia.org/wiki/Philip_II_of_Macedon