Updated:
Original:
Year
1941
Month Day
November 26

Japanese task force leaves for Pearl Harbor

On this day in 1941, Adm. Chuichi Nagumo leads the Japanese First Air Fleet, an aircraft carrier strike force, toward Pearl Harbor, with the understanding that should “negotiations with the United States reach a successful conclusion, the task force will immediately put about and return to the homeland.”

Negotiations had been ongoing for months. Japan wanted an end to U.S. economic sanctions. The Americans wanted Japan out of China and Southeast Asia-and to repudiate the Tripartite “Axis” Pact with Germany and Italy as conditions to be met before those sanctions could be lifted. Neither side was budging. President Roosevelt and Secretary of State Cordell Hull were anticipating a Japanese strike as retaliation—they just didn’t know where. The Philippines, Wake Island, Midway—all were possibilities. American intelligence reports had sighted the Japanese fleet movement out from Formosa (Taiwan), apparently headed for Indochina. As a result of this “bad faith” action, President Roosevelt ordered that a conciliatory gesture of resuming monthly oil supplies for Japanese civilian needs canceled. Hull also rejected Tokyo’s “Plan B,” a temporary relaxation of the crisis, and of sanctions, but without any concessions on Japan’s part. Prime Minister Tojo considered this an ultimatum, and more or less gave up on diplomatic channels as the means of resolving the impasse.

Nagumo had no experience with naval aviation, having never commanded a fleet of aircraft carriers in his life. This role was a reward for a lifetime of faithful service. Nagumo, while a man of action, did not like taking unnecessary risks—which he considered an attack on the American naval base at Pearl Harbor to be. But Chief of Staff Rear Adm. Isoruku Yamamoto thought differently; while also opposing war with the United States, he believed the only hope for a Japanese victory was a swift surprise attack, via carrier warfare, against the U.S. fleet. And as far as the Roosevelt War Department was concerned, if war was inevitable, it desired “that Japan commit the first overt act.”

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