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,
Battle of the Philippine Sea Japan's ability to interfere with future amphibious invasions. Few U.S. commanders realized how powerful Task Force 58 had become. Though initially undertaken with trepidation, the raids proved to be successful beyond anything U.S. planners had imagined—notably with Operation Hailstone, which effectively neutralized the primary central Pacific base of the Imperial Japanese Navy at Truk Lagoon and changed the manner in which the war would be pursued. While U.S. commanders, particularly Admiral Spruance, were concerned about the Japanese trying to attack U.S. transports and newly landed forces, the Japanese objective was actually to engage and defeat the Fast Carrier Task Force.