Royal Navy	Army & Royal Marines	Royal Air Force
Admiral of the Fleet	Field Marshal	Marshal of the Royal Air Force
Admiral	General	Air Chief Marshal
Vice Admiral	Lieutenant General	Air Marshal
Rear Admiral	Major General	Air Vice Marshal
Commodore	Brigadier	Air Commodore
Captain	Colonel	Group Captain
Commander	Lieutenant Colonel	Wing Commander
Lieutenant Commander	Major	Squadron Leader
Lieutenant	Captain	Flight Lieutenant
Sub Lieutenant	Lieutenant	Flying Officer
	Second Lieutenant	Pilot Officer
Midshipman *

* Note. Midshipman is not an equal rank to Second Lieutenant and Pilot Officer.