In this battle, the two forces did not expect it to end in the way it did. The Prediction was, Persia was going come and Greece would indeed put up a fight for a little while. However, in the end, Persia was going to win a gruesome battle. This was not the case. After the Greeks led the Persian army into the pass of Thermopylae, the two armies fought for three days. King Leonidas of Sparta was the one leading the Greek army. It was said that a man named Ephialtes, who was a local resident,  betrayed the Greeks by showing the Persian army the mountain pass that led behind the Greek lines. After dismissing the rest of his forces, King Leonidas stayed to try to fight off the Persian forces with his 300 Spartans. Even though the Spartans stood their ground for a good amount of time, the Persian army did take the pass. The Persians sustained heavy losses to their army. This battle is forever known as one of the greatest military stands in history. So in all, the two sides compromised for the short term, and Greece got the better of it in the long term. Persia won the battle, but Greece won the war.