Individual #Thirty_Years'_War  a series of conflicts (1618-1648) starting between German Protestants and Catholics and spreading until France and Denmark and Sweden were opposing the Holy Roman Empire and Spain
  part:  battle_of_Lutzen  battle_of_Rocroi
  type:  war.military_action__warfare  the waging of armed conflict against an enemy; "thousands of people were killed in the war"

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