Early on the morning of 8 December the U.S. forces in the Philippines were notified that a state of war existed and a full war alert was ordered. On the same day the first Japanese aerial attack on the Philippines took place. This was followed by others and on 10 December enemy landings were made on Luzon. Expecting an early victory, the Japanese sent a large force, but it was not until 6 May 1942 that the Japanese were able to conquer the American and Filipino defenders who fought a delaying action down the Bataan Peninsula and made a final stand on the island of Corregidor. All military resistance ended in the rest of the Philippine Islands by 17 May except for small bands of guerrillas who continued to fight the enemy until 1945 when the U.S. forces landed in the Philippines. In March 1942 the commander of the United States Army Forces in the Far East was ordered to move to Australia by the President of the United States. Troops from the United States began arriving in Australia in December 1941 for the build-up in preparation for the defense of Allied bases and the recapture of enemy-held islands and bases in the Pacific.
While some Japanese forces were carrying out the attacks in the Pacific, others were overrunning Malaya, North Borneo, and Thailand. After eighteen days of fighting Hong Kong was captured on 25 December 1941. Thailand, unable to resist the Japanese, agreed to co-operate with them. Early in 1942 the Japanese took Borneo and by 15 February the British garrison in Malaya capitulated. In the Netherlands East Indies the U.S. Navy inflicted damage on an enemy convoy in the Battle of Makassar Strait, the first important surface action of the war for the U.S. Navy. On 9 March 1942 formal surrender by the Dutch ended all resistance in the Netherlands East Indies. By these conquests in Asia and the Pacific, the Japanese gained valuable territory rich in natural resources and were ready to expand in other directions.
During the first six months of 1942 the U.S. Navy fought the Japanese Navy in the Battle of the Coral Sea and the Battle of Midway, and raided the Marshall and Gilbert Islands. Army Air Forces medium bombers took off from a carrier at sea and bombed Tokyo in April 1942 in a surprise attack. As part of the Midway operations in June, planes of the Japanese Navy bombed U.S. installations in Alaska and enemy troops landed in the Aleutian Islands on Attu and Kiska.
The Allied defensive phase of the war in the Pacific ended on 6 August 1942, with the Allies ready to strike the enemy-held islands in the South Pacific.
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INFANTRYMEN DURING A FIELD INSPECTION in the Hawaiian Islands, January 1941. From 1935 on the U.S. garrison in the Hawaiian Islands was larger than any other American overseas outpost. However, by 1940 there was a shortage of modern equipment and trained personnel, and not until February 1941 did troop reinforcements and up-to-date equipment begin to arrive in Hawaii. The United States was not prepared for war and the men and equipment did not meet the necessary requirements.
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