Sea - Salamis 480 BCE.
Land - Plataea 479 BCE.
It was called the Persian War.
Plataea of the last battle in the Persian war.
Perhaps the most famous is the sea battle against the Spanish Armada.
Technically it depends on what you mean by most famous The Battle of Gettysburg had the highest death count of about 43,000 also the Seven days war was a battle that was quite famous in the civil war
First define the Second Persian War. The Persian War ran 499-449 BCE - it had several phases - Ionian Revolt, Persian punitive expedition against Eretria and Athens, Persian invasion of mainland Greece, Greek counter-offensive. Which among this are supposed to be 'First Persian War', Second Persian War' and 'Third Persian War' ?
battle of Gettysburg
the battle of thermoply Thermopylae was in the Second Persian War when Athens and Sparta were on the same side. The most important battle in question was the Siege of Syracuse.
I think Gettysburg.
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.
Nelson
Probably the Trojan War