During 1945, "Nizam" was assigned to the Philippines and New Guinea theatres as part of the British Pacific Fleet, during which, her pennant number was changed from G38 to D15. On 15 August 1945, "Nizam" received orders to cease hostilities; shortly after this, the ship was attacked by a Japanese fighter, which was shot down. "Nizam" was present in Tokyo Bay for the Japanese surrender, and served as duty destroyer on 2 September, the day the Japanese Instrument of Surrender was signed. The destroyer left for Australia on 24 September.