 His army suffered a devastating defeat at Delphi, he was heavily injured during the battle and committed suicide there.His militarily inexperienced army was forced to a continuous retreat by the tactical attacks of the Greek city-states and was cut down to a remaining band that fled from Greece.In 280 BC a great army, comprising about 85,000 warriors, coming from Pannonia and split in three divisions, marched south in a "great expedition" to the Greek mainland against Macedonia and then further south to central Greece as far south as Delphi during a failed and short-lived campaign against the Greek city-states.