United States Navy in World War II was "sunk" at Pearl Harbor. It is correct to say that American industrial might was a deciding factor in World War II, and Admiral Yamamoto knew that a prolonged war for Japan was a losing war. The Battle of Midway, together with the Guadalcanal campaign, marked the turning point in the Pacific. Between June 4–7, 1942, the United States Navy decisively defeated a Japanese naval force that had sought to lure the U.S. carrier fleet into a trap at Midway Atoll. The Japanese fleet lost four aircraft carriers to the U.S. Navy's one American carrier and a destroyer. After Midway,
Imperial Japanese Navy in World War II the Mobile Fleet, along with large numbers of land-based aircraft, would be concentrated. If the Americans attacked the Marianas, they would be attacked upon by land-based planes in that vicinity. Then the Americans would be lured into the areas where the Mobile Fleet could defeat them. A month after Koga's death, Admiral Soemu Toyoda become the new commander of Combined Fleet. This opportunity for a decisive battle came in June 1944 when the Americans landed on Saipan in the Marianas. The Japanese responded with their largest carrier force of the war, with the nine carrier Mobile Fleet, led by the