Jisaburō Ozawa
The landing on Leyte led to the activation of Operation Shō-Gō 1, the Japanese navy's planned riposte to an Allied landing in the Philippines. The plan was a complicated operation with three separate fleets: The 1st Mobile Fleet, now labeled the Northern Force under Jisaburō Ozawa, the Center Force under Takeo Kurita, and the Southern Force under Shōji Nishimura. Ozawa's carriers, by now depleted of most of their aircraft, were to serve as a decoy for Kurita's and Nishimura's battleships, which were to use the distraction to attack the invasion fleet directly. Kurita's ships were detected in the San Bernardino Strait on 24 October, and in the ensuing Battle of the Sibuyan Sea, American carrier aircraft sank the powerful battleship , causing Kurita to temporarily reverse course. This convinced Admiral William F. Halsey, the commander of Third Fleet, to send the fast carrier task force to destroy the 1st Mobile Fleet, which had by then been detected. "Washington" steamed north with the carriers, and on the way Halsey established TF 34, under Lee's command, consisting of "Washington" and five other fast battleships, seven cruisers, and eighteen destroyers.