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:{{See also|Second Sino-Japanese War}}

:{{See also|Second Sino-Japanese War}}

After Pearl Harbor, the Japanese juggernaut seemed unstoppable.  In the south, they conquered the [[Philippines]], the oil-rich Dutch East Indies, Malaysia, and extended their reach as far as the Solomon Islands.  In the west, they seized [[Burma]] and the vital port at [[Rangoon]], and even attacked British forces at [[Ceylon]].  The Japanese empire now reached as far as [[Wake Island]] in the east and the Aleutian Islands to the north.  Attacks on Japanese targets, including the Doolittle raid, boasted American morale, but did little material damage.  In May 1942, Japanese forces were finally halted at the [[Battle of the Coral Sea]], which cost the Americans a precious [[aircraft carrier]], but saved southern [[New Guinea]].  At the [[Battle of Midway]] a month later, the Japanese lost four of their best carriers, suffering a blow to their sea power from which they never recovered.

After Pearl Harbor, the Japanese juggernaut seemed unstoppable.  In the south, they conquered the [[Philippines]], the oil-rich Dutch East Indies, Malaysia, and extended their reach as far as the Solomon Islands.  In the west, they seized [[Burma]] and the vital port at [[Rangoon]], and even attacked British forces at [[Ceylon]].  The Japanese empire now reached as far as [[Wake Island]] in the east and the Aleutian Islands to the north.  Attacks on Japanese targets, including the Doolittle raid, boasted American morale, but did little material damage.  In May 1942, Japanese forces were finally halted at the [[Battle of the Coral Sea]], which cost the Americans a precious [[aircraft carrier]], but saved southern [[New Guinea]].  At the [[Battle of Midway]] a month later, the Japanese lost four of their best carriers, suffering a blow to their sea power from which they never recovered.

 

The Americans took the offensive in August with a landing on the island of [[Guadalcanal]].  The overall American offensive strategy was two-pronged.  Forces in the south advanced up the Solomon island chain and New Guinea, while in the central Pacific, Marines took island after island, including [[Battle of Tarawa|Tarawa]], Eniwetok, [[Saipan]], and [[Guam]].  The two lines of attack came together at the Philippines.

The Americans took the offensive in August with a landing on the island of [[Guadalcanal]].  The overall American offensive strategy was two-pronged.  Forces in the south advanced up the Solomon island chain and New Guinea, while in the central Pacific, Marines took island after island, including [[Battle of Tarawa|Tarawa]], Eniwetok, [[Saipan]], and [[Guam]].  The two lines of attack came together at the Philippines.

The Japanese, soldiers and civilians alike, were expected to put up a fierce defense.  Army Chief of Staff [[George C. Marshall]] believed that Japan would fight to the last man, and insisted on preparing for a land invasion of Japan with an army of 2,000,000 men anticipating a tremendous number of casualties.  Some analysts estimated the number of projected casualties from Operation Olympic alone at 250,000 dead and wounded.<ref>Historical Atlas of the U.S. Navy, by Craig L. Symonds, the Naval Institute, 1995</ref>  For this reason, Washington strongly requested the Soviets declare war on Japan. At the Potsdam conference in mid-July 1945, Stalin told President Truman the Soviets would declare war on Japan but would not give a firm timetable.<ref>Wheeler (1983) p. 58</ref> (This was the last of the four "Allied" conferences, taking place in mid-July 1945; the other three were: the Tehran Conference from November 28 to December 1, 1943; the Cairo Conference from November 22 to November 26, 1943; the Yalta Conference from February 4 to February 11, 1945.)

The Japanese, soldiers and civilians alike, were expected to put up a fierce defense.  Army Chief of Staff [[George C. Marshall]] believed that Japan would fight to the last man, and insisted on preparing for a land invasion of Japan with an army of 2,000,000 men anticipating a tremendous number of casualties.  Some analysts estimated the number of projected casualties from Operation Olympic alone at 250,000 dead and wounded.<ref>Historical Atlas of the U.S. Navy, by Craig L. Symonds, the Naval Institute, 1995</ref>  For this reason, Washington strongly requested the Soviets declare war on Japan. At the Potsdam conference in mid-July 1945, Stalin told President Truman the Soviets would declare war on Japan but would not give a firm timetable.<ref>Wheeler (1983) p. 58</ref> (This was the last of the four "Allied" conferences, taking place in mid-July 1945; the other three were: the Tehran Conference from November 28 to December 1, 1943; the Cairo Conference from November 22 to November 26, 1943; the Yalta Conference from February 4 to February 11, 1945.)

 

===Japanese capitulation===

===Japanese capitulation===

After the successful atom bomb test in the U.S., President Truman was left with the immense task of deciding what to do with the power of the atomic bomb. Truman assembled a committee to advise him. The committee recommended the bomb should be used on the Japanese Empire mainland to save American lives and produce maximum shock to try to convince the Japanese to surrender.<ref>Wheeler (1983) pp. 58-60</ref> Therefore, on August 6, 1945, a B-29 Superfortress, the "Enola Gay" piloted by Paul Tibbet, dropped an atomic bomb (now called a nuclear weapon) on [[Hiroshima]]. Japan's war council still insisted on its four conditions for surrender, refusing unconditional surrender. So on August 9, "Bockscar", a B-29 piloted by Frederick C. Bock dropped the second atomic bomb on Nagasaki.<ref>Wheeler (1983) pp. 94-101</ref> The necessity of the second bombing at Nagasaki has been debated, as the Soviet Union had declared war upon Japan, and Japan was blockaded; however, the Japanese war council still refused unconditional surrender before the second bomb was dropped.

After the successful atom bomb test in the U.S., President Truman was left with the immense task of deciding what to do with the power of the atomic bomb. Truman assembled a committee to advise him. The committee recommended the bomb should be used on the Japanese Empire mainland to save American lives and produce maximum shock to try to convince the Japanese to surrender.<ref>Wheeler (1983) pp. 58-60</ref> Therefore, on August 6, 1945, a B-29 Superfortress, the "Enola Gay" piloted by Paul Tibbet, dropped an atomic bomb (now called a nuclear weapon) on [[Hiroshima]]. Japan's war council still insisted on its four conditions for surrender, refusing unconditional surrender. So on August 9, "Bockscar", a B-29 piloted by Frederick C. Bock dropped the second atomic bomb on Nagasaki.<ref>Wheeler (1983) pp. 94-101</ref> The necessity of the second bombing at Nagasaki has been debated, as the Soviet Union had declared war upon Japan, and Japan was blockaded; however, the Japanese war council still refused unconditional surrender before the second bomb was dropped.

 

The Soviet Union declared war on Japan at midnight August 8, 1945, in response to the American requests and in a last-minute grab for the spoils of war. It invaded Manchuria and Korea with 1.6 million troops; the Japanese army disintegrated. The Soviets captured 600,000 military and civilian prisoners of war; most of whom never returned home again.<ref>Wheeler (1983) p. 156</ref> It was no longer possible for the Imperial Army to defend the emperor. On August 15, 1945, Emperor Hirohito by radio broadcast announced Japan would accept the terms of the Allies, unconditional surrender.<ref>Wheeler (1983) pp. 165-167</ref> By follow up message, the Japanese government stated they were surrendering with the understanding the Emperor would remain on the throne and would not be hung as a war criminal. Washington agreed, saying the authority of the emperor would be "subject to the Supreme Commander of the Allied Powers." On September 2, 1945, the Japanese Emperor formally surrendered all Japanese forces to the Allies in a famous ceremony aboard the battleship ''USS Missouri'' in Tokyo Bay. This was the ending of World War II, after six years almost to the day.

The Soviet Union declared war on Japan at midnight August 8, 1945, in response to the American requests and in a last-minute grab for the spoils of war. It invaded Manchuria and Korea with 1.6 million troops; the Japanese army disintegrated. The Soviets captured 600,000 military and civilian prisoners of war; most of whom never returned home again.<ref>Wheeler (1983) p. 156</ref> It was no longer possible for the Imperial Army to defend the emperor. On August 15, 1945, Emperor Hirohito by radio broadcast announced Japan would accept the terms of the Allies, unconditional surrender.<ref>Wheeler (1983) pp. 165-167</ref> By follow up message, the Japanese government stated they were surrendering with the understanding the Emperor would remain on the throne and would not be hung as a war criminal. Washington agreed, saying the authority of the emperor would be "subject to the Supreme Commander of the Allied Powers." On September 2, 1945, the Japanese Emperor formally surrendered all Japanese forces to the Allies in a famous ceremony aboard the battleship ''USS Missouri'' in Tokyo Bay. This was the ending of World War II, after six years almost to the day.