Instituted - March 1961
Branch of Service - Civil Defence and other auxiliary forces.
Ribbon - Blue bearing three narrow stripes of yellow, red and green.
Metal - Cupro-nickel
Size - Height 38mm; maximum width 32mm
Description - Obverse: the effigy of the reigning monarch; Reverse: Three shields flanked by sprigs of acorns and oak leaves. The upper shield is inscribed CD, with the initials on the lower shields inscribed AFS and NHSR.