A war is not a battle.
The Persian War arose from Persia's attempt to stop war in the western part of its empire by bringing the constantly-warring Greek city-states to peace.
Plataea of the last battle in the Persian war.
Thermopylai was a battle in the Persian War.
Leonidas I, King of Sparta, is the king who died in a battle protecting Sparta from the Persian War.
Battle of Ephesus 498 BCE.
Plataia was a battle in the 50 year Persian War. A coalition of Greek city-states defeated a Persian expeditionary force in the battle.
The Persian War went on for 50 years, with dozens of ground battles. Which one?
Persian War 499-449 BCE.
The sea battle of Salamis 480 BCE.
The battle of Thermopylae.
salamis
Ephesus 498 BCE.
The Persian War ended in 449 BCE. In 479 BCE the persian invasion of peninsular Greece was defeated after a land battle at Plataia and a sea battle at Mykale, however the war continued on for another thirty years.