The significant battle that marked the turning point in the Pacific Theater of World War II was the Battle of Midway, fought in June 1942. This battle saw the United States Navy decisively defeat an attacking fleet of the Imperial Japanese Navy. Midway resulted in the loss of four Japanese aircraft carriers, which severely weakened Japan's naval strength. The victory shifted the balance of power in the Pacific, allowing the Allies to take the offensive in subsequent battles. Midway is often considered a crucial moment that contributed significantly to the eventual defeat of Japan.