Admiral of the Fleet Terence Thornton Lewin

https://en.wikipedia.org/wiki/Terence_Lewin

Admiral of the Fleet Terence Thornton Lewin, Baron Lewin, KG, GCB, LVO, DSC (19 November 1920 – 23 January 1999) was a Royal Navy officer. He served in the Second World War and then commanded a destroyer, the Royal yacht, two frigates and an aircraft carrier before achieving higher command. He was First Sea Lord and Chief of the Naval Staff in the late 1970s and in that role he worked hard to secure a decent wage for servicemen and helped win them a 32% pay rise. He went on to be Chief of the Defence Staff during the Falklands War, serving as chief war planner and as Prime Minister Margaret Thatcher's chief advisor during the war. He was also the first Chief of Defence Staff to act as head of the Armed Forces rather than just Chairman of the Chiefs of Staff Committee.