paramilitary vs paramilitary force

paramilitary

noun
  • A group of civilians trained and organized in a military fashion, but which do not represent the formal forces of a sovereign power. 

  • A member of a paramilitary group. 

adj
  • relating to a paramilitary 

paramilitary force

How often have the words paramilitary and paramilitary force occurred in a corpus of books? (source: Google Ngram Viewer )