Today marks the final day of the WWII Battle of Coral Sea. This battle was the first ever air sea battle. Starting May 4, 1942 this 4 day battle lead role was played by aircrafts launched off aircraft carriers. The USS Yorktown CV-5 (namesake of the Yorktown CV-10) was damaged in this battle. The battle used exclusively aircraft carriers. May 8th the main aircrafts from the United States and Japan found each other and was a defeat for the United States tactically. Strategic, however it was a victory for the United States for it did not allow Japan to land at Port Moresby.