8th Most Significant : The Battle of the Coral Sea
May 4, 1942 to May 8, 1942.
Major naval battle in the Pacific between the Japanese and the Allies. Considered a tactical victory for Japan after the carrier USS Lexington is lost, while Japan loses only the light carrier Shoho. The engagement ends with no clear victor however the Japanese are forced to abandon their attempts to land troops to take Port Moresby, New Guinea.