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  2. United States declaration of war on Japan - Wikipedia

    en.wikipedia.org/wiki/United_States_declaration...

    Following the U.S. declaration, Japan's allies, Germany and Italy, declared war on the United States, bringing the United States fully into World War II. The Japanese government had originally intended to deliver their own declaration of war thirty minutes before the attack, but the Japanese embassy in Washington took too long to decode the ...

  3. List of World War II battles involving the United States

    en.wikipedia.org/wiki/List_of_World_War_II...

    Caused the United States to formally enter World War II and declare war on Japan, Germany, and Italy; Resulted in reorganization and buildup of the U.S. Armed Forces; Resulted in shift in public opinion in favor of entering the war; Battle of Wake Island: December 8, 1941 December 23, 1941 Wake Island: 627 (130 killed, 49 wounded and 448 ...

  4. Battle of Saipan - Wikipedia

    en.wikipedia.org/wiki/Battle_of_Saipan

    The Battle of Saipan was an amphibious assault launched by the United States against the Empire of Japan during the Pacific campaign of World War II between 15 June and 9 July 1944. The initial invasion triggered the Battle of the Philippine Sea , which effectively destroyed Japanese carrier-based airpower , and the battle resulted in the ...

  5. Pacific War - Wikipedia

    en.wikipedia.org/wiki/Pacific_War

    Concurrently, the United States conducted the Doolittle Raid on the Japanese mainland in April 1942, in which 16 bombers took off from the aircraft carrier USS Hornet, 600 miles (970 km) from Japan. The raid inflicted minimal material damage on Japanese soil but was a significant boost for American morale; it also had psychological ...

  6. Japan during World War II - Wikipedia

    en.wikipedia.org/wiki/Japan_during_World_War_II

    Germany, followed by the other Axis states, declared war on the United States [23] in solidarity with Japan, citing as justification the American attacks on German war vessels that had been ordered by Roosevelt. [24] The United States entered the European Theater and Pacific Theater in full force.

  7. Military history of the United States during World War II

    en.wikipedia.org/wiki/Military_history_of_the...

    The military history of the United States during World War II covers the nation's role as one of the major Allies in their victory over the Axis Powers. The United States is generally considered to have entered the conflict with the 7 December 1941 surprise attack on Pearl Harbor by the Empire of Japan and exited it with the 2 September 1945 ...

  8. Battle of Attu - Wikipedia

    en.wikipedia.org/wiki/Battle_of_Attu

    The Battle of Attu (codenamed Operation Landcrab), [4] which took place on 11–30 May 1943, was fought between forces of the United States, aided by Canadian reconnaissance and fighter-bomber support, and Japan on Attu Island off the coast of the Territory of Alaska as part of the Aleutian Islands campaign during the American Theater and the Pacific Theater.

  9. Japan–United States relations - Wikipedia

    en.wikipedia.org/wiki/JapanUnited_States...

    Japan's Axis allies, including Nazi Germany, declared war on the United States days after the attack, bringing the United States into World War II. The Pacific War was marked by atrocities towards both civilians and combatants alike, such as Japanese conduct towards both civilians and allied prisoners of war and allied desecration of Japanese dead.