Admiral of the Fleet (Royal Navy)

Admiral of the Fleet is a five-star naval officer rank and the highest rank of the Royal Navy formally established in 1688.[2] The five-star NATO rank code is OF-10, equivalent to a field marshal in the British Army or a marshal of the Royal Air Force. Other than honorary appointments no new admirals of the fleet have been named since 1995.

Admiral of the Fleet
The flag of an admiral of the Fleet is the Union Flag, and is in 1:2 rather than the 2:3 of other admirals' flags.[1]
Insignia shoulder board and sleeve lace for Admiral of the Fleet
Country United Kingdom
Service branch Royal Navy
Rank groupFlag officer
RankFive-star
NATO rank codeOF-10
Formation1688
Next lower rankAdmiral
Equivalent ranks