May 7-8, 1942, an important battle happen, that is the Battle of Coral Sea. The Battle was fought by air planes on both sides, There was no ship involved at all. The Japanese wanted to capture New Guinea and leave Australia out. The Coral Sea actions happen from a Japanese operation, they wanted to capture Port Moresby, on New Guinea's southern-eastern coast. Japanese air base threaten Australia and supported plans for future expansion, trying to help Australia get out of the war and exchange the strategic defense of Japan's oceanic empire.
In the spring of 1942, the Japanese had great gains in the Far East. The conquest of the Philippines, Burma, Malaya, and Dutch East Indies had cost the Japanese Navy 23 warships. Also, 67 transportation ships had also been lost. The naval command had expected a greater loss. Some of the people thought it would be best if they continue spearheading territorial gains, Admiral Nagano was a supporter of these. Others, followed Admiral Yamamoto, wanted to an all out attack on America's aircraft. Yamamoto believed that the destruction of America's aircraft, would make sure they had a security for Japan. Because of these, Yamamoto wanted an attack on Midway, as he believed that such an attack would definitely draw the American navy into a battle, which he believe that Japan would win.
However, everything changed when the Americans forced the Japanese. On April 18th, 1942, America launched bombs from two aircrafts carrier, which bombed Tokyo. Because of these, it gave Yamamoto more stregth against the Americans aircraft carriers on May 5th. General Headquarters Navy Order 18 was notified, and he ordered Yamamoto to carry out an attack on Midway, this operation was all taken place in June 1942.
The Japanese could not call of the attack on New Guinea, as it was to far advanced. Therefore, Yamamoto was not able to call on all the forces that he needed for an attack on Midway, as some Japanese forces were concentrated in the Coral Sea to the south-east of New Guinea. The attack on Part Moresby was very important to the Hapanese, as its success would isolate Australia and New Guinea could be used as a platform to attack three other places, Fiji, New Caledonia, and Samoa. Japanese had two aircraft carriers, Shokaku and the Zuikaku. These were to sail from Truk Island and were to intercept any ship sent by the American to attack the Japanese. The Japanese wanted to attack Port Moresby, that was their goal as well as to move through the Jomard Passage. The attack on Port Moresby was a very serious attack for the Americans. They believed that any attack would only leave Australia vulnerable. Chester Nimitz and Douglas MacArthur gave the attack on Port Moresby a high priority. The Americans broke through the Japanese code and knew the detailes of their plans. They knew that the attack on Port Moresby was schedual to happen on May 3rd and that the Japanese had to go through Coral Sea to make this attack happen. ...