Upon his wife's accession to the throne in 1952, the Duke was appointed Admiral of the Sea Cadet Corps, Colonel-in-Chief of the British Army Cadet Force, and Air Commodore-in-Chief of the Air Training Corps [REF].
To celebrate his 90th birthday, the Queen appointed him Lord High Admiral of the Royal Navy (the highest rank in the organisation anyone other than the sovereign can hold)[REF] and Canada appointed him to the highest ranks available in all three branches of the Canadian Armed Forces [REF].