A Cross flory terminated in the horizontal and basebars with bombs, the upper bar terminating with a rose, surmounted by another cross composed of aeroplane propellers charged in the centre with a roundel within a wreath of laurels a rose winged ensigned by an Imperial Crown thereon the letters R.A.F. and attached to the clasp and ribbon by two sprigs of laurel.
The Royal Cypher above the date 1918. Since 1939, the year of award has usually been recorded on the reverse side of the lower arm.
55mm across the arms of the cross.
28mm wide, the ribbon is red with 5mm wide dark blue stripes at each edge. and white.
31mm wide, the ribbon is of equal sized 3mm diagonal stripes of mauve and white.