The Efficiency Medal and clasps are rewards for long and meritorious service by warrant officers, non-commissioned officers, and soldiers in the Territorial Army of Great Britain or other auxiliary forces of the Commonwealth, and, in New Zealand, are conferred only on warrant officers, non-commissioned officers, and soldiers of the New Zealand Territorial Force (hereinafter referred to as the Territorial Force) who have performed the requisite qualifying service under these regulations:provided that prior service in the auxiliary forces of any other part of the Commonwealth, duly certified, shall count towards the requisite qualifying service as prescribed.