#army_engineer__military_engineer  a member of the military who is trained in engineering and construction work
  supertype:  #engineer__applied_scientist__appliedscientist__technologist  a person who uses scientific knowledge to solve practical problems
  subtype:  #sapper  a military engineer who does sapping (digging trenches or undermining fortifications)
  subtype:  #sapper.army_engineer  a military engineer who lays or detects and disarms mines

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