After further training and exercises near Milne Bay, "Manoora" participated in her first amphibious landing on 22 April 1944; the Operation Reckless landings at Tanamerah Bay. Following Operation Reckless, the LSI saw service in most of the amphibious operations in the Pacific theatre. On 17 May, "Manoora" operated as part of the Battle of Wakde, followed by the landings at Morotai on 15 September, and Leyte during October. At the start of 1945, the ship participated in operations at Lingayen Gulf, followed by the Borneo campaign, with landings at Tarakan on 1 May, Brunei Bay during 9 and 10 June, then Balikpapan on 1 July. After this, "Manoora" sailed to Australia, and was in Sydney when World War II ended.