Alexander and Phillips subdue the Greeks (jun 16, 343 BC – jan 19, 338 BC)
Description:
 Alexander joins his father in a war against the Greek City States in the south and the north and form the Hellenic Alliance, which is made up of Pro-Macedonian states and Macedonian puppet states. Essentially all of Greece is unified  except for Sparta. Alexander becomes a general. 
Added to timeline:
Date:
jun 16, 343 BC
jan 19, 338 BC
 ~ 5 years and 4 months