Avoid being in Alexander the Great's army!

It is the 4th century BC and you are a sheep farmer living in the wild hilly part of northern Greece known as Macedonia. Macedonia used to be weak and divided but your previous king, Philip II made it united and strong and turned the Macedonians into a fighting force that now controls most of Greece. His son, Alexander III, who is only 20 is about to start on a great scheme that his father was planning when he died - the invasion of themighty Persian Empire. He needs soldiers and you are to join him and see the world.