Relative Ranks
| Royal Navy | Army | 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 |
Note: Officers of the same rank, rank with each other according to their seniority.
