Territorial Efficiency Medal
The Territorial Efficiency Medal is a medal of the United Kingdom awarded for long service in the Territorial Army. This award superseded the Territorial Force Efficiency Medal when the Territorial Force became the Territorial Army in 1921.
The criteria were for a minimum of 12 years service in the Territorial Army with war service counting double. Bars for further periods of 12 years were not awarded because they were not possible, given that this medal was superseded after 9 years by the Efficiency Medal.The medal is referred to as the TEM.
Sourced from Wikipedia and the RGJRA http://www.rgjassociation.info
original source from www.thegazette.co.uk