#battlefront__front__front_line__frontline  the line along which opposing armies face each other
  supertype:  line.military_position  a fortified position (especially one marking the most forward position of troops); "they attacked the enemy's line"
  part of:  battlefield__battleground__field_of_battle__field  a region where a battle is being (or has been) fought; "they made a tour of Civil War battlefields"

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