Section 8(2)(iii) in The Punjab Home Guards and Civil Defence (Field) Class III Service Rules, 1983
(iii)Forty-five per cent by promotion from amongst Armourers [Assistant Sub-Inspectors rank], Havildar Instructors, Quarter Master Sergeants, Sergeant Mechanics and Sergeant Armourers, who have an experience of working as such for a minimum period of five years in the ratio of the sanctioned strength in these ranks :