Wars of Alexander the Great participant Macedonia
Background
In 336, Philip II was assassinated by the captain of his bodyguard, Pausanias. Philip's son, and previously designated heir, Alexander, was proclaimed king by the Macedonian noblemen and army. He also succeeded his father as head of the League of Corinth, a confederation of Greek states that were under the hegemony of Macedonia in order to combat the Achaemenid Empire.News of Philip's death roused many states into revolt, including Thebes, Athens, Thessaly, as well as the Thracian tribes to the north of Macedon. When news of the revolt reached Alexander, he took quick action. Although his advisers recommended the use of diplomacy, Alexander ignored the advice and instead proceeded to muster together his Macedonian cavalry of 3,000 men.  Together, the army rode south towards Thessaly (Macedon's immediate neighbor to the south). When he found the Thessalian army blocking the pass between Mount Olympus and Mount Ossa, he had his men ride over Mount Ossa. When the Thessalians awoke, they found Alexander at their rear. The Thessalians quickly surrendered, and their cavalry was added to Alexander's force. He then proceeded south, towards the Peloponnese.Alexander stopped at Thermopylae, where he was recognized as the leader of the Sacred League before heading south to Corinth. Athens sued for peace and Alexander received the envoy and pardoned anyone involved with the uprising. At Corinth, he was given the title 'Hegemon' of the Greek forces against the Persians. Whilst at Corinth, he heard the news of a Thracian uprising in the north.