The Pacific War concerned the theatre of the Second World War (1939-45) fought in the Pacific Ocean and eastern parts of Asia between Japan and the United States and its allies. Japan had expanded its empire in the region throughout the 1930s, but the sneak attack on the US base at Pearl Harbor brought that country into the war. The military and industrial might of the US permitted it to launch offensive after offensive and, despite heavy casualties, push the Japanese military back to the home islands, which were then bombed relentlessly. The Pacific War and WWII ended following the dropping of two atomic bombs and Japan's surrender in August 1945.
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Timeline
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7 Dec 1941Japanese air and sea attack on the US naval base at Pearl Harbor. US declares war on Japan as a result, entering WWII.
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2 Jan 1942The Japanese army takes the Philippines capital of Manila and the air base at Cavite during World War II, dealing the Allied Forces a crushing blow in the capture of the primary US base in the Western Pacific.
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Feb 1942Japanese forces capture Singapore.
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18 Apr 194216 US B-25 Mitchell bombers attack Tokyo in the Doolittle Raid, the first air attack on Japan in WWII.
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May 1942Japanese forces begin constructing an airstrip on Guadalcanal in the Solomon Islands.
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4 May 1942 - 8 May 1942The Battle of the Coral Sea, the first naval battle in history between aircraft carriers.
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4 Jun 1942 - 6 Jun 1942US victory at the Battle of Midway, turning point of the Pacific War.
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Aug 1942 - Feb 1943US forces defeat those of Japan in the Guadalcanal Campaign in the Solomon Islands.
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Oct 1943US forces establish a base in the Ellice Islands during WWII's Pacific War.
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Nov 1943 - Feb 1944The Gilbert and Marshall Islands Campaign in WWII's Pacific War.
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20 Nov 1943 - 23 Nov 1943Battle of Tarawa in the Gilbert Islands during WWII's Pacific War. US victory over Japanese forces.
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Jun 1944 - Jul 1944US victory in the Battle of Saipan in the Mariana Islands.
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Jul 1944 - Aug 1944US victory in the Battle of Guam in the Mariana Islands.
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Sep 1944US forces return to eventually oust Japan from the Philippines.
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24 Nov 1944The first Boeing B-29 Superfortresses raid from the Marianas Islands attacks Japan.
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Feb 1945 - Mar 1945US victory in the Battle of Iwo Jima.
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Feb 1945The first of many US bombing raids on Tokyo.
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9 Mar 1945334 Boing B-29 Superfortress bombers attack Tokyo causing over 87,000 deaths.
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Apr 1945 - Jun 1945US victory in the Battle of Okinawa in the Ryukyu Islands.
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17 Jul 1945 - 2 Aug 1945The leaders of the USA, UK, and USSR meet to discuss issues concerning the end of WWII, including the surrender of Japan and treatment of defeated Nazi Germany.
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6 Aug 1945The ‘Enola Gay’, a Boeing B-29 Superfortress drops an atomic bomb on Hiroshima, Japan.
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9 Aug 1945The ‘Bockscar’, a Boeing B-29 Superfortress drops an atomic bomb on Nagasaki, Japan.
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15 Aug 1945Japan surrenders and so ends the Second World War.