#cavalry  a highly mobile army unit
  supertype:  #army_unit  a military unit that is part of an army
  member:  #troop.army_unit  #cavalryman
  subtype:  #squadron.cavalry  a cavalry unit consisting of two or more troops and headquarters and supporting arms
  subtype:  #horse_cavalry__horsecavalry  an army unit mounted on horseback
  subtype:  #mechanized_cavalry  an armored unit of a modern army equipped with motor vehicles

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