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Japanese Combined Fleet

Japanese military

Quick Summary

The Japanese Combined Fleet was the primary naval force of the Empire of Japan during World War II. It was instrumental in the early stages of the war, notably in the surprise attack on Pearl Harbor on December 7, 1941. Admiral Isoroku Yamamoto was a key figure, advocating for a carrier-based strategy and conceiving the Pearl Harbor attack to cripple the U.S. Pacific Fleet.12

However, the fleet suffered devastating losses at the Battle of Midway in June 1942, losing four of its best carriers and most of its trained pilots. This battle marked a turning point, shifting the strategic initiative to the Allies. Further significant losses occurred at the Battle of the Philippine Sea in 1944, effectively ending the Combined Fleet's ability to conduct offensive operations. By the war's end, the Japanese navy and air force were severely depleted, contributing to Japan's eventual surrender.345

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