Retired and Former Officers
Field marshals whether promoted while serving or in retirement continue to use this rank.
Other regular officers who attained the substantive rank of captain and above may use, and be addressed by, their rank on retirement from the Army. It is not accepted practice for retired officers of the Reserve to use or be addressed by, their rank on retirement unless employed in a civilian capacity in a Ministry of Defence establishment.
The word ‘retired’ (or ‘retd’) should not be added after an officer’s name in ordinary correspondence or in lists, but only when it is specifically necessary to indicate that an officer has retired, for example one employed in a civilian capacity in a Ministry of Defence establishment to avoid confusion with serving officers.