Xerxes

=Xerxes = 

Xerxes the Great, also known as Xerxes I of Persia, was a King of Persia (reigned 485–465 BC) of the Achaemenid dynasty.
At the Battle of Thermopylae, a small force of warriors, 300 Spartans, and 1000 other Greeks, led by King Leonidas of Sparta, resisted the much larger Persian forces, but were ultimately defeated. According to Herodotus, the Persians broke the Spartan phalanx after a Greek man called Ephialtes betrayed his country by telling the Persians of another pass around the mountains. After Thermopylae, Athens was captured and the Athenians and Spartans were driven back to their last line of defense at the Isthmus of Corinth and in the Saronic Gulf. The delay caused by the Spartans allowed Athens to be vacated.

What happened next is a matter of some controversy. According to Herodotus, upon encountering the deserted city, in an uncharacteristic fit of rage particularly for Persian kings, Xerxes had Athens burned. He almost immediately regretted this action and ordered it rebuilt the very next day. However, Persian scholars dispute this view as pan-Hellenic propaganda, arguing that Sparta, not Athens, was Xerxes' main foe in his Greek campaigns, and that Xerxes would have had nothing to gain by destroying a major center of trade and commerce like Athens once he had already captured it.

At that time, anti-Persian sentiment was high among many mainland Greeks, and the rumor that Xerxes had destroyed the city was a popular one, though it's equally likely the fire was started by accident as the Athenians were frantically fleeing the scene in pandemonium, or that it was an act of "scorched earth" warfare to deprive Xerxes' army of the spoils of the city. Unfortunately, regardless of the circumstances the damage was done and Xerxes considered the capture of Athens as the only major mistake in his military career.

At Artemisium, large storms had destroyed ships from the Greek side and so the battle stopped prematurely as the Greeks received news of the defeat at Thermopylae and retreated. Xerxes was induced by the message of Themistocles (against the advice of Artemisia of Halicarnassus) to attack the Greek fleet under unfavorable conditions, rather than sending a part of his ships to the Peloponnesus and awaiting the dissolution of the Greek armies. The Battle of Salamis (September 29, 480 BC) was won by the Athenians. Although the loss was a setback, it was not a disaster as some Greek historians have claimed, and Xerxes set up a winter camp in Thessaly.