Personal Aide-de-Camp to the King (or Queen) is an appointment in the Royal Household of the United Kingdom. It is distinct from that of other aides-de-camp, in that it is only bestowed on members of the British royal family holding military rank. The appointment may be signified by the post-nominal letters 'ADC(P)'.[2] It is an honorary role with few duties or responsibilities attached.[3]
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was invoked but never defined (see the help page).