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,
Task Force 44 was Royal Australian Navy Rear Admiral John Gregory Crace. From 13 June 1942 the task force was commanded by Rear Admiral Victor A.C. Crutchley of the Royal Navy. The unit saw action during the Battle of the Coral Sea, in which it helped turn back a Japanese attempt to invade Port Moresby, New Guinea. The Force was temporarily redesignated Task Group 17.3 during the battle. The task force later, under Crutchley, assisted with the initial stages of the Guadalcanal Campaign along with escorting Allied convoys around the northeast Australia, New Guinea, and Coral Sea areas. In August 1942, the force