VJ Day marks the end of WWII, and the cessation of fighting against Japan. It is called "Victory In Japan Day or "Victory Over Japan Day".
On August 14, 1945, it was announced that Japan had surrendered unconditionally to the Allies, effectively ending World War II. Since then, both August 14 and August 15 have been known as “Victoryover Japan Day,” or simply “V-J Day.” The term has also been used for September 2, 1945, when Japan’s formal surrender took place aboard the U.S.S. Missouri, anchored in Tokyo Bay. Coming several months after the surrender of Nazi Germany, Japan’s capitulation in the Pacific brought six years of hostilities to a final and highly anticipated close.
Japan’s devastating surprise aerial attack on the U.S. naval base at Pearl Harbor on Oahu, Hawaii, on December 7, 1941, capped a decade of deteriorating relations between Japan and the United States and led to an immediate U.S. declaration of war the following day. Japan’s ally Germany, led by Adolf Hitler, then declared war on the United States, turning the war raging in Europe into a truly global conflict. Over the next three years, superior technology and productivity allowed the Allies to wage an increasingly one-sided war against Japan in the Pacific, inflicting enormous casualties while suffering relatively few. By 1945, in an attempt to break Japanese resistance before a land invasion became necessary, the Allies were consistently bombarding Japan from air and sea, dropping some 100,000 tons of explosives on more than 60 Japanese cities and towns between March and July 1945 alone.
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