During the Battle of Wenquan Pass in 480 BC. C., the Alliance of the Greek City-State fought against the invading Persian army in the Wenquan Pass. The Greeks were so numerous that they stopped the enemy at one of the most famous last stops in history. The Persian king Ahasuerus led an army of over 100,000 (the prewar Persian king Ahasuerus had approximately 170,000 soldiers) to Greece and encountered 300 Spartans, 700 Thespians, and 400 Thebes. Xerxes waited for 10 days until King Leonidas surrendered or retired, but he did not decide to go ahead. After three days of fighting, all the Greeks died. The failure of Sparta was not as expected, because a local shepherd named Effie Altes defected to the Persians and told Xerxes that the Persians could use them to outflank the Greeks who passed through the hot springs. The road alone was not as strong as they thought.