Already in 1937, the US government was dissatisfied with the actions of the Japanese in Manchuria, as well as with the policy of Germany and Italy.
Being a major supplier of oil and steel to Japan, the United States warned the Japanese government about the possibility of termination of the supply in case the Japanese army will not leave China
In order to exclude the possibility of military aggression by Japan, Roosevelt throws part of the American fleet in the Hawaiian Islands located on a military base - Pearl Harbor, which is now the headquarters of the US Pacific Fleet.
Meanwhile, the echoes of the Great Depression, which began in the US in the late 20-ies of the last century, have also come to faraway Japan - the economy of apart living The Asian nation has suffered very heavy losses.
On the 27 September 1940, Japan signed with the governments of Germany and Italy the Tripartite Pact, in which countries recognize the mutual right to establish a new order of politics in their regions, as well as agreed on mutual cooperation in the event of armed attack on one of the countries.
On the 1st of November 1941 at the meeting of the Japanese government, as a result of the debate, it was decided to go to war against the United States (as well as against England and Holland).
Of course, in Japan, possessed far less military power in comparison with the US, the decision to attack was hard to be taken.
But when all diplomatic ways to solve the issues, which were interesting to Japan, have been left behind, it was decided to use military power.
One of the main objectives of setting war against the United States was that Japan had an interest in important for the country's commodity areas such as Sumatra and Borneo. In order to be able to conduct there fighting successfully, first, it was necessary to take belonging to American and British strategic military bases in the Pacific, in particular, Singapore, Hong Kong.
While planning the beginning of the war, the Japanese government had suggested that it would be quite short, and by the beginning of May 1942, it would end. Nevertheless, for the war in July 1941, a mass appeal to the armed forces started in the country. Therefore, the number of the army of the rising sun was more than a million people.
On the 1 December 1941 Japanese Emperor Hirohito decided to start hostilities.
The Japanese fleet under Admiral Yamamoto, which came to the US military base at Pearl Harbor, located on the Hawaiian Islands, consisted of six aircraft carriers, which were carrying about four hundred planes and several submarines.
At the dawn on the 7 December 1941, Japanese planes began to bomb Pearl Harbor.
It was sunk four battleships, two cruisers and one minelayer. Battleship Arizona was among the battleships. The Americans lost about 3,000 people.
Six hours after the attack US warships and submarines were ordered to launch military action in the ocean against Japan. President Franklin D. Roosevelt addressed the Congress with a speech and declared war on Japan. On the 11 December Germany and Italy, on the 13 December3 - Romania, Hungary and Bulgaria - declare war on the US. On the 10 December 1941, the Japanese began the invasion of the Philippines and captured them by April 1942, most of the American and Filipino troops were taken prisoners.
Since early 1942, the Japanese aircraft attacked the port of Darwin on the north coast of Australia. There have been major naval battles involving aircraft carriers in the Coral Sea on the 8 May and of Midway on the 4 June, where the Americans gained their first victory over the Japanese. The Battle of Midway was the turning point in the Pacific war.
On the island of New Guinea, the Japanese were advancing in the direction of Port Moresby, but the US-Australian troops under the command of General Douglas MacArthur stopped them. August 7, 1942, the US Marines landed on Guadalcanal and captured a Japanese airfield. In October-November 1942, the Japanese launched several counter-attacks, but there weren't avail. February 9, 1943, Americans have fully captured Guadalcanal, July-August 1943 captured the southern and central part of the archipelago of the Solomon Islands, in November and December part of the island of Bougainville and New Britain. 20-23 November American marines captured the Gilberts (Tarawa Atoll), and in January and February 1944, landed in the Marshall Islands (Island Roy, Kwajalein and Majuro).
During the spring of 1944, the Americans conducted a series of amphibious operations on the northern coast of New Guinea, which has accelerated the advancement of the allied forces from the southern part of the island. During the summer and autumn, the Allies liberated a large part of New Guinea, and Japanese units were surrounded in the central and south-western part of the island and gave up only at the end of the war. Besides, Japanese in the Caroline Islands got trapped and cut off from the outside world/
June 15, 1944, the Americans landed on the heavily fortified island of Saipan (Northern Mariana Islands). The Japanese put up fierce resistance, but by 9 July, they were defeated. Capture of Saipan by Americans led to the fall of the government of General Tojo in Japan. During the summer of 1944 Mariana Islands had been fully captured and their airfields were used to bomb Japan , as the distance was enough for the actions of the American bomber B-29 Superfortress
In October 1944, it was the largest in the history of the naval battle of Leyte Gulf. The Japanese fleet has suffered catastrophic losses, after which the US Navy was the absolute dominance of the sea. Japanese aviation also suffered catastrophic losses from exceeding its United States Air Force. October 20 Americans under the command of General Douglas MacArthur began landing on the island of Leyte (southern Philippines) and purified it from the Japanese forces by 31 December. January 9, 1945, the Americans landed on the main island of the Philippine archipelago - Luzon. During January and February, they defeated most of the Japanese forces on Luzon, and on the 3 March released Manila. By May, most of the Philippines has been released, only the remnants of the Japanese troops in the mountains and the jungle continued to resist until August.
February 19, 1945, US Marines landed on the island of Iwo Jima, where the Japanese had a very strong resistance. March 26, 1945, Island was captured. April 1, American troops landed on the island of Okinawa, with the support of the US Navy and Royal Navy, and took it on June 22, 1945. Both on Iwo Jima and Okinawa Japanese have the most fierce resistance of the war since these islands were already directly Japanese territory. Allied ships were often attacked by the Japanese "kamikaze". Battles on both islands ended in the almost complete destruction of the Japanese forces.
In July 1945, the Allies presented an ultimatum to Japan, but she refused to surrender. August 6, 1945, an American bomber B-29 Superfortress dropped the atomic bomb (the atomic bombings of Hiroshima and Nagasaki) on Hiroshima and Nagasaki on August 9, which led to enormous destruction - and on the 15 August Emperor Hirohito announced Japan's unconditional surrender. Act of Japan's surrender was signed on September 2, 1945, on the board of US Navy battleship "Missouri".
