(w)"superior officer", when used in relation to a person subject to this Act, means–(i)any member of the Force to whose command such person is for the time being subject in accordance with the rules;(ii)any officer of a higher rank or class or of a higher grade in the same class, and includes, when such person is not an officer, a subordinate officer or an under-officer of higher rank, class or grade;(x)"under-officer" means a Head Constable of the Force;