On 10 June, Battleship Division 1 departed Tawitawi for Batjan in preparation for Operation Kon, a planned counterattack against the American invasion of Biak. Three days later, when Admiral Soemu Toyoda, commander-in-chief of the Combined Fleet, was notified of American attacks on Saipan, Operation Kon was canceled and Ugaki's force was diverted to the Mariana Islands. The battleships rendezvoused with Ozawa's main force on 16 June. During the Battle of the Philippine Sea, "Nagato" escorted the aircraft carriers , and the light carrier . She fired 41 cm Type 3 "Sankaidan" incendiary anti-aircraft shrapnel shells at aircraft from the light carrier that were attacking "Jun'yō" and claimed to have shot down two Grumman TBF Avenger torpedo bombers. The ship was strafed by American aircraft during the battle, but was not damaged and suffered no casualties. During the battle "Nagato" rescued survivors from "Hiyō" that were transferred to the carrier once the ship reached Okinawa on 22 June. She continued on to Kure where she was refitted with additional radars and light AA guns. Undocked on 8 July, "Nagato" loaded a regiment of the 28th Infantry Division the following day and delivered them to Okinawa on 11 July. She arrived at Lingga via Manila on 20 July.