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,
Kantai Kessen form of the Fast Carrier Task Force, the product of US industrial capacity coupled with her innovation. The task force was overwhelmingly powerful, and would end up crushing the Imperial Japanese Navy. Unlike the carrier raids of the first two years of the war, the Fast Carrier Task Force could approach any objective, isolate it and overwhelm it before the Japanese navy could intervene. This imbalance pointed up the two major weaknesses of Japanese naval intent. First, the Japanese did not have the means to establish an effective defensive perimeter which would allow them to respond to threats by concentrating