He went on to be Commander-in-Chief of the East Indies Fleet in the closing stages of the war and conducted naval strikes on the Imperial Japanese Army in Borneo and Malaya.

[7] He was promoted to acting sub-lieutenant on 15 January 1909[8] and to lieutenant on 15 April 1910[9] on his appointment to the battlecruiser HMS Indomitable in the Home Fleet.

[10] Power served in the Second World War as assistant chief of the Naval Staff from May 1940 and was granted promotion to rear admiral on 25 June 1940.

[10] Appointed Flag Officer in charge of Malta in May 1943, he played a leading role in the planning for the Allied invasion of Sicily in July 1943, and, having been promoted to vice admiral on 4 August 1943,[16] he led the planning for the Allied invasion of Italy and then commanded the naval forces for the actual landing of V Corps at Taranto in September 1943.

[18]Power was appointed a Knight Grand Cross of the Order of the British Empire on 1 January 1946[19] and became Second Sea Lord and Chief of Naval Personnel in February 1946.

[20] He was also appointed First and Principal Naval Aide-de-Camp to the King on 15 January 1951[23] and was double-hatted as NATO Allied Commander-in-Chief, Channel and Southern North Sea Command from 1952.

[25] Power retired in September 1952 and became a Deputy Lieutenant of Southampton on 27 April 1953[26] shortly before attending the coronation of Queen Elizabeth II in June 1953.