The Battle of Midway was an epic clash between the U.S. Navy and the Imperial Japanese Navy that played out six months after the attack on Pearl Harbor. The U.S. Navy’s decisive victory in the air-sea battle (June 3-6, 1942) and its successful defense of the major base located at Midway Island dashed Japan’s hopes of neutralizing the United States as a naval power and effectively turned the tide of World War II in the Pacific.