Japan and the Imperial Japanese Navy (IJN). On 23 March she sailed from Ulithi as part of CTU 6 with the 25th, 27th and 4th RAN destroyer flotillas to join US operations off the Sakishima Gunto islands group, as part of Operation Iceberg 1. On 1 April she transferred with the Task Force 57 carriers to cover air attacks on Formosa. On 12 April, as part of Operation Iceberg Oolong, she provided covered during attacks on Shinchiku and Matsugama. The next day Euryalus rejoined US ships off Sakishima Gunto. She deployed with Task Force 57 during the final strike of Phase 1 of the Sakishima Gunto attacks. On 1 May she rejoined US Task Force 45 with Task Force 57 carriers to continue the attacks on Sakishima Gunto. Three days later Operation Iceberg 2 began, resuming the attacks on Sakishima Gunto. On 27 May Euryalus, with the other ships of the Royal Navy, transferred to US Task Force 37, as changes were made in the organisation of the US Fleet. She was at Brisbane on 4 June for repair and maintenance, then sailed to Manus. From Manus she sailed on 6 July for operations in preparation for Operation Olympic, the invasion of Japan. On 17 July she deployed with Task Force 37, joining ships of US Task Force 38 to provide cover during air attacks on targets in the Tokyo – Yokohama area, including airfields and the seaplane base at Kitaura. On 24 July she covered Task Force 37 carriers during air attacks on Osaka and Katori as well as attacks on shipping. On 9 August she covered the same Task Force during attacks on airfields and shipping in north Honshu and Hokkaido. On 12 August she took passage to Manus due to a shortage of fuel oil from British support tankers. Euryalus transferred back to Royal Navy control on 15 August, after the surrender of Japan. She arrived back at Manus on 18 August and on 27 August sailed as TU.111.2 with the carriers HMS Indomitable and , the cruisers , , and the destroyers , and for the reoccupation of Hong Kong. On 29 August 1945 she entered Hong Kong with HMS Swiftsure and the landing ship . Post-war service Euryalus was the last original Dido operational in Royal Navy, until 1954, mainly on the South Atlantic station. The ship was the most modernised of the original Didos,