Today marks the 77th anniversary of Pearl Harbor, one of history’s most famous events. On the morning of December 7, 1941, the Imperial Japanese Navy launched a surprise attack on the American naval and air facilities at Pearl Harbor, Hawaii. Striking without warning (and before Tokyo’s issuance of a formal declaration of war), the Japanese military caught the U.S. Army and Navy completely off guard. In a span of less than two hours, Japanese fighters, bombers and submarines killed 2,400 American service members (as well as 49 civilians) and sank or severely damaged a dozen American warships, including the battleships Arizona, Utah, and Oklahoma.
Without question, the Pearl Harbor attack was one of the most brilliant and sophisticated tactical operations in military history. To achieve surprise, the Japanese Navy had secretly moved six carrier battle groups across 4,000 miles of ocean in heavy winter seas to reach the waters off Hawaii. During the long dangerous voyage across the Pacific, the Japanese warships never broke radio silence. After the attack the Japanese fleet left Hawaii almost unscathed, having lost only 100 pilots and submariners. Few navies in history could have pulled off such a skillful feat as the Pearl Harbor operation.
But Pearl Harbor ultimately proved to be a strategic disaster of truly epic proportions for Japan. In the years that followed the attack the United States went on a war footing that vastly exceeded Japan’s ability to match. Even before the Japanese planes returned to their carriers, Tokyo’s unconditional surrender became America’s central war aim in the Pacific theater. As Professor Gerhard Weinberg observed in his classic work, A World At Arms: A Global History of World War II, the unprovoked nature of Japan’s attack on Pearl Harbor “was guaranteed to unite the American people for war until Japan surrendered. . . . The attainment of surprise guaranteed defeat, not victory, for Japan.”
When Japan finally surrendered in August 1945, it had sustained one of the most crushing defeats in the history of modern warfare. American firebombing (including two atomic bomb attacks) had destroyed most of Japan’s major cities, Japan’s military was shattered, and over 2 million Japanese were dead. The war also devastated Japan’s reputation with its neighbors as the brutal Japanese military occupation of China, Korea, Vietnam, and the Philippines created bitterness that lasted decades. For the rest of the twentieth century, the United States stood as the dominant power in the Pacific.
Pearl Harbor’s enormous historical significance is self-evident. But there is a remarkable aspect of the Pearl Harbor story that even many students of World War II do not know. A few hours after the Pearl Harbor attack, the United States Navy issued an extraordinary order to its surface and submarine fleets, one that violated international law and probably the Constitution of the United States as well.
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