The decoration is an oval skeletal design and was struck in silver, with parts of the obverse in silver-gilt. The oval is high and wide and is suspended by a thin silver wire suspension bar which is attached to a small ring at the top on the reverse. File:Colonial Auxiliary Forces Officers' Decoration (Victoria).jpg|Queen Victoria version, narrow 32 mm ribbon File:Colonial Auxiliary Forces Officers' Decoration (Edward VII).jpg|King Edward VII version, narrow 32 mm ribbon File:Colonial Auxiliary Forces Officers' Decoration (George V) v2.jpg|Second King George V version, wider 38 mm ribbon File:Colonial Auxiliary Forces Officers' Decoration (George V) v3.jpg|Third King George V version miniature, wider ribbon ;Obverse The obverse is an oval silver band, inscribed "COLONIAL AUXILIARY FORCES" and with the Royal Cypher of the reigning monarch in skeletal form and in silver-gilt in the centre. The oval is surmounted by a silver-gilt Imperial Crown. Five versions of the decoration are known. • A second King George V version exists, with his Royal Cypher "GRI V" for "Georgivs Rex Imperator V", with the Roman numeral "V" below the cypher "GRI". On this and the third King George V version the crown has two cut-out sections at the top. • The third King George V version, of which a miniature is illustrated, has the Roman numeral "V" to the right of the cypher "GRI". ;Reverse The reverse is plain. The recipient's name was usually engraved at either the top on the back of the crown or around the circumference of the decoration. ;Ribbon The ribbon, as described in the regulations accompanying the original Royal Warrant of Queen Victoria, is the same as that of the
Volunteer Long Service Medal, dark green and wide, and suspended from a silver bar-brooch decorated with an oak leaf pattern. In an amendment to the rules and ordinances pertaining to the decoration, published in the Royal Warrant of King George V on 9 June 1921, the ribbon was described as green and wide. This wider ribbon and brooch was revoked by the Royal Warrant of King George V on 22 June 1927. ==Discontinuation==