The emblems of the office are the
royal cypher and crown (of the monarch who appointed the officer), which is worn on the uniform shoulder straps; and (when wearing certain classes of uniform) No. 1 gold
aiguillettes, which are worn on the right shoulder. The aiguillettes of Personal Aides-de-Camp are distinguished from those of other Aides-de-Camp by the addition of the royal cypher and crown to each tag. In the 20th century, the royal cyphers worn by Personal Aides-de-Camp differed from those worn by other officers in that they consisted of
block letters, rather than being of the usual
stylised format. Personal Aides-de-Camp continue to wear the royal cypher on their shoulder straps even after relinquishing the appointment, and if the appointment was held under more than one sovereign then the cypher of each is worn. ==List of Personal Aides-de-Camp to the Sovereign by reign==