The Battle of Coral Sea was fought in May 1942 during World War II between the Japanese and Allied forces of Americans and Australians. The four-day fight was the first air-sea battle in history, as it involved launching aircraft from carriers at sea.
The battle started when the Japanese attempted to make an amphibious landing at Port Moresby in New Guinea and to thereby gain control of the Coral Sea. Allied interception of Japanese messages had led to their advance knowledge of the Japanese attack, and American aircraft carriers and other ships under the command of Rear Admiral Frank J. Fletcher were waiting for the Japanese. The Japanese also had aircraft carriers in the area, under the control of Vice Admiral Takagi Takao. The carriers of both sides were damaged during the fight, but the battle was an Allied victory, as the Japanese were then left without air cover for their ground assault on Port Moresby. They turned back in defeat.
The battle was also important because it left Japanese forces diminished for the Battle of Midway, which occurred a month later and which resulted in an Allied victory. The Battle of Midway is regarded as the turning point in the war in the Pacific and the beginning of the path towards Allied victory in the region.