The Battle of Saipan is of great significance. There is a long journey of 3000 nautical miles from Pearl Harbor to Saipan Island, and another 1000 nautical miles from Eniwetok. Once defeated and stumbled under the fortified city, the Japanese forces in Saipan can delay for longer. After 2-4 months of full training, the joint fleet and the air fleet will attack the American fleet directly, and there will be a chance to hit the American army seriously. The next U.S. counteroffensive may be delayed for several months, and the Japanese will gradually build a defensive circle, and the Pacific War situation will naturally be indefinitely delayed. So in 1944, Admiral Spruance, Commander-in-Chief of the 5th Fleet, decided to lead the largest iron and steel convoy in human history, including the 53rd, 51st and 58th Special Fleets, a total of 29 aircraft carriers, 25 cruisers and 7 battleships, including nearly 650 ships, nearly 1,000 aircraft, full of the Marine Corps. Ground forces, such as the 2nd Division, the 4th Division, the 3rd Division, the 1st Brigade and the 27th Division of the Army, whose campaign code name is grain collector, aim at Saipan Island. The landing date is scheduled for June 15. Japan did not expect that the United States would dare to go deep alone and attack Saipan and Guam. According to experience, the Japanese base camp believes that the US military must rely on the cover of base air force to carry out island-by-island attacks. And it won't come too early. Japan also made some preparations. At the end of May, 118 troops were sent to supply Saipan. But along the way, they were ambushed by U.S. submarines. Five of the seven transport ships sank, one was injured and 2,240 soldiers died. Only 1,000 people came to Saipan in despair, and 600 of them were injured. But the most serious was the loss of almost all the two-month rations and ammunition for a battle point transported to Saipan, which was destined to be a tragic place for the "Royal Army". At 9:40 a.m. on June 13, 1944, there were moving mountains at the end of the sea. Soon, giant steel warships approached the coast like mirages. Seven battleships, six cruisers and 26 destroyers were facing Saipan Island. Targets on the shore of Tinian Island began to target artillery at a slow speed. The 30,000-ton battleship was equipped with heavy steel armor, and a pair of 300-mm large main guns mounted in a large armored turret weighing more than 900 tons fired at speeds of up to several hundred kilograms at speeds of up to 700 meters per second. Artillery shells were positioned offshore and shore-bound, destroying everything like earthquakes. Until now, the Japanese army did not know that the U.S. military's goal was Saipan. The Japanese army had thought that MacArthur of the U.S. Army would advance first in New Guinea. Palau Island in the southwest will be the primary target of the U.S. Army. The 14th Division, the only reserve unit that can be mobilized in the Japanese base camp, and most of the construction equipment will be sent to Palau Islands on a priority basis. The Saipan project is scheduled to be completed in November. Unexpectedly, the U.S. military arrived five months ahead of schedule. At this time, the coastal artillery of Saipan Island has not been erected. There are no permanent fortifications, and no defense system in depth.... For more information, please refer to my travels, - "http://you.ctrip.com/travels/saipan569/3363072.html.