12-7-41

Attack on Pearl Harbor - Wikipedia, the free encyclopedia: The attack on Pearl Harbor (called Hawaii Operation or Operation AI[6][7] by the Japanese Imperial General Headquarters (Operation Z in planning)[8] and the Battle of Pearl Harbor[9]) was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941 (December 8 in Japan). The attack was intended as a preventive action in order to keep the U.S. Pacific Fleet from interfering with military actions the Empire of Japan was planning in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States.