4. Constitution of Civil Defence Corps.- (1) The State Government may constitute, for any area within the State, a body of persons to be called the Civil Defence Corps (hereinafter referred to as the "Corps") and may appoint a person, not being, in its opinion, below the rank of a District Magistrate (to be known as the "Controller") to command such Corps:

Provided that if there is in existence in any area in a State, immediately before the commencement of this Act in that area, an organisation which, in the opinion of the State Government, may be entrusted with the functions of the Corps, the State Government may, instead of constituting a separate Corps for such area, call upon that organisation to take over or discharge the functions of the Corps in that area, and thereupon such organisation shall be deemed, for the purposes of this Act, to be the Corps for that area.

(2) The State Government may, for the purpose of co-ordinating the activities of the Controllers within the State, appoint a Director of Civil Defence and every Controller shall comply with the directions given by such Director.