On June 19, 1944, the "Great Marianas Turkey Shoot" took place. An excerpt from the article:
"The United States awesome industrial might was on full display during the summer of 1944. On June 6th, the U.S. along with British and French vessels attacked the French coast from bases in England with over 5000 vessels of all sizes. Less than two weeks later on the other side of the world, the United States was readying an attack on Saipan with 500 ships, including seven large fleet aircraft carriers and eight light carriers containing 956 aircraft.
Saipan was part of the Marianas Chain and located just east of the Philippines in the Philippine Sea. The fleet arrived on the 15th of June but the Japanese were to use their remaining aircraft carrier strength in the Pacific, (five large fleet carriers and four light carriers) as well as land-based aircraft on Guam to attack the U.S. fleet to try to inflict heavy damage and turn back the invasion. The Japanese could muster 756 aircraft for the attack.
The resultant battle which took place over June 19-20 was a decisive loss for the Japanese and destroyed their last remaining hope for offensive capability in the Pacific. The cream of the Japanese air arm which had carried them to huge victories in the Pacific early in the war was long gone. Losses in the Coral Sea, Midway and the resultant combat had stripped Japan of nearly all of her best-experienced pilots."