professional army: a permanent army, composed of full time soldiers who are paid by the government
infantry: foot soldiers
cavalry: mounted troops (soldiers on horses). Today: tanks and armoured verhicles
artillery: weapons, like catapults, to shoot big projectiles. Today: cannons and mortars
navy: branch the armed forces that fights on, under, or over the sea. Most navies keep a fleet, or group, of warships.
hoplite: Greek citizen soldier.
Ionians: Greeks who lived in Greek colonies at the west coast of modern Turkey.
uprising / revolt: when the people of a city or country fight against their own king
because they don't agree with his rule.
allies: a group of persons or countries that work together to fight a common enemy.
Companion cavalry: an elite unite of young Macedonian nobles
Hegemon: leader of all Greeks
Persepolis: Persian capital, destroyed by Alexander the Great
Aristotle: philosopher from Macedon who became famous in Athens. Tutor of Alexander the Great
Diadochi: successors of Alexander the Great