The attack on Pearl Harbor was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941 (December 8 in Japan). The attack led to the United States' entry into World War II.
The attack was intended as a preventive action in order to keep the U.S. Pacific Fleet from interfering with military actions the Empire of Japan was planning in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States. There were simultaneous Japanese attacks on the U.S.-held Philippines and on the British Empire in Malaya, Singapore, and Hong Kong. The attack came as a profound shock to the American people and led directly to the American entry into World War II in both the Pacific and European theaters. The following day, December 8, the United States declared war on Japan. Domestic support for non-interventionism, which had been strong, disappeared. Clandestine support of Britain (e.g., the Neutrality Patrol) was replaced by active alliance. Subsequent operations by the U.S. prompted Germany and Italy to declare war on the U.S. on December 11, which was reciprocated by the U.S. the same day.
Years later several writers alleged that parties high in the U.S. and British governments knew of the attack in advance and may have let it happen (or even encouraged it) with the aim of bringing America into war. However, this advance-knowledge conspiracy theory is rejected by mainstream historians.
There were numerous historical precedents for unannounced military action by Japan. However, the lack of any formal warning, particularly while negotiations were still apparently ongoing, led President Franklin D. Roosevelt to proclaim December 7, 1941, "a date which will live in infamy". Because the attack happened without a declaration of war and without explicit warning, the attack on Pearl Harbor was judged by the Tokyo Trials to be a war crime.
Bombing of Pearl Harbor
Sixteen U.S. Army Air Forces B-25B Mitchell medium bombers were launched without fighter escort from the U.S. Navy's aircraft carrier USS Hornet deep in the Western Pacific Ocean, each with a crew of five men. The plan called for them to bomb military targets in Japan, and to continue westward to land in China—landing a medium bomber on Hornet was impossible. Fifteen of the aircraft reached China, and the other one landed in the Soviet Union. All but three of the crew survived, but all the aircraft were lost. Eight crewmen were captured by the Japanese Army in China; three of these were executed. The B-25 that landed in the Soviet Union at Vladivostok was confiscated and its crew interned for more than a year. Fourteen crews, except for one crewman, returned either to the United States or to American forces.
After the raid, the Japanese Imperial Army conducted a massive sweep through the eastern coastal provinces of China, in an operation now known as the Zhejiang-Jiangxi Campaign, searching for the surviving American airmen and applying retribution on the Chinese who aided them, in an effort to prevent this part of China from being used again for an attack on Japan. An estimated 250,000 Chinese civilians were killed by the Japanese during this operation.
The raid caused negligible material damage to Japan, but it succeeded in its goal of raising American morale and casting doubt in Japan on the ability of its military leaders to defend their home islands. It also caused Japan to withdraw its powerful aircraft carrier force from the Indian Ocean to defend their Home Islands, and the raid contributed to Admiral Isoroku Yamamoto's decision to attack Midway Island in the Central Pacific—an attack that turned into a decisive strategic defeat of the Imperial Japanese Navy (IJN) by the U.S. Navy in the Battle of Midway. Doolittle, who initially believed that loss of all his aircraft would lead to his being court-martialled, received the Medal of Honor and was promoted two steps to Brigadier General.
Doolittle's Raid
The invasion of the Philippines started on December 8, 1941, ten hours after the attack on Pearl Harbor. As at Pearl Harbor, American aircraft were severely damaged in the initial Japanese attack. Lacking air cover, the American Asiatic Fleet in the Philippines withdrew to Java on December 12, 1941. General Douglas MacArthur escaped Corregidor on the night of March 11, 1942 for Australia, 4,000 km away. The 76,000 starving and sick American and Filipino defenders on Bataan surrendered on April 9, 1942, and were forced to endure the infamous Bataan Death March on which 7,000–10,000 died or were murdered. The 13,000 survivors on Corregidor surrendered on May 6.
Japan occupied the Philippines for over three years, until the surrender of Japan. A highly effective guerilla campaign by Philippine resistance forces controlled sixty percent of the islands, mostly jungle and mountain areas. MacArthur supplied them by submarine, and sent reinforcements and officers. Filipinos remained loyal to the United States, partly because of the American guarantee of independence, and also because the Japanese had pressed large numbers of Filipinos into work details and even put young Filipino women into brothels.
General MacArthur kept his promise to return to the Philippines on October 20, 1944. The landings on the island of Leyte were accomplished by a force of 700 vessels and 174,000 men. Through December 1944, the islands of Leyte and Mindoro were cleared of Japanese soldiers. During the campaign, the Imperial Japanese Army conducted a suicidal defense of the islands. Cities such as Manila were reduced to rubble. Between 500,000 and 1,000,000 Filipinos died during the occupation.
Japanese occupation of the Philippines
Began on April 9, 1942, was the forcible transfer by the Imperial Japanese Army of 60,000–80,000 Filipino and American prisoners of war after the three-month Battle of Bataan in the Philippines during World War II. All told, approximately 2,500–10,000 Filipino and 100–650 American prisoners of war died before they could reach their destination at Camp O'Donnell. The reported death tolls vary, especially amongst Filipino POWs, because historians cannot determine how many prisoners blended in with the civilian population and escaped. The march went from Mariveles, Bataan, to San Fernando, Pampanga. From San Fernando, survivors were loaded to a box train and were brought to Camp O'Donnell in Capas, Tarlac.
The 60 mi (97 km) march was characterized by occasional severe physical abuse and resulted in some fatalities inflicted upon prisoners and civilians alike by the Japanese Army. It was later judged by an Allied military commission to be a Japanese war crime.
Bataan Death March
Japanese Occupation of China
The war was the result of a decades-long Japanese imperialist policy aiming to dominate China politically and militarily and to secure its vast raw material reserves and other economic resources, particularly food and labour. Before 1937, China and Japan fought in small, localized engagements, so-called "incidents". In 1931, the Japanese invasion of Manchuria by Japan's Kwantung Army followed the Mukden Incident. The last of these incidents was the Marco Polo Bridge Incident of 1937, marking the beginning of total war between the two countries.
Initially the Japanese scored major victories in Shanghai after heavy fighting, and by the end of 1937 captured the Chinese capital of Nanking. After failing to stop the Japanese in Wuhan, the Chinese central government was relocated to Chongqing in the Chinese interior. By 1939 the war had reached stalemate after Chinese victories in Changsha and Guangxi. The Japanese were also unable to defeat the Chinese communist forces in Shaanxi, which performed harassment and sabotage operations against the Japanese using guerrilla warfare tactics. On December 7, 1941, the Japanese attacked Pearl Harbor, and