In late October, the Japanese moved in a three-pronged attack to repel the invasion of the Philippines to force a decisive naval battle. The ensuing battle was the four-part Battle of Leyte Gulf, in which "Ingersoll" and her task group also took part. When Admiral Halsey detached part of his fleet southward to intercept Japanese ships off Samar on 25 October 1944, "Ingersoll" joined Admiral Dubose's task group in pursuit of the fleeing remnants of the Japanese fleet. During the long stern chase "Ingersoll" fired one torpedo at long range, but the group did not engage the remaining Japanese heavy ships.