#regiment  army unit smaller than a division
  supertype:  #army_unit  a military unit that is part of an army
  member:  #battalion  an army unit usually consisting of a headquarters and three or more companies
     member:  #company.army_unit  small military unit; usually two or three platoons
        member:  #platoon  a military unit that is a subdivision of a company; usually has a headquarters and two or more squads; usually commanded by a lieutenant

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