A further amendment on 10 May 1946 made part-time officers who served during the Second World War also eligible for the award of the medal and clasp, provided they were serving on the active list of the Territorial Army, the Auxiliary Territorial Service or any Auxiliary Military Force on 2 September 1939 and were embodied or called up for war service. The reason for this amendment originated from the anomaly that, during the war, a large number of officers were commissioned from the ranks, and merely by the fact that they were so promoted owing to their efficiency, would be denied the right to the Efficiency Medal. Such officers were allowed to reckon their service as officers as qualifying service for the medal and clasps. Officers who had already qualified for the award of the Efficiency Decoration before that date were, however, not eligible.