Section 200-A. Volunteer firemen serving in more than one fire company or fire department

When any person has served as a  volunteer  fireman  as  provided  in  section  two  hundred  of this chapter, for less than five
  years, and while in good standing in the company or department of  which
  he was a member, has resigned therefrom or has been transferred from one
  company to another, he shall be entitled to a certificate as provided in
  section  two  hundred  two  of this chapter for the time he has actually
  served. And when any person has served five years as a volunteer fireman
  in one or more companies or departments,  as  provided  in  section  two
  hundred  of this chapter, he shall be deemed an exempt volunteer fireman
  and entitled to all the rights and privileges  of  an  exempt  volunteer
  fireman.