EFFICIENCY DECORATION 1952-69 Category_General Service while the Air Force Cross

while the Air Force Cross was awarded to officers

Awarded to recognise both military and some types of civilian service

Awarded for 15 years exemplary conduct

26 clasps were awarded but a maximum of nine (plus the two date bars) were awarded to the Army and eight to the Navy

engaged in operations

EFFICIENCY DECORATION 1952-69 Category_General Service while the Air Force CrossTerritorial Decoration awarded with the green ribbon with central yellow stripe until 1982 when it was combined into a single Decoration emcompassing the AER and T&AVR, the ribbon was then standardised to half blue half green with a central yellow stripe. This can also be awarded with the HAC ribbon to members of the HAC who qualify for the award.