| Name | Description | 
  | Napoleonic wars [1] | Series of historical Earth conflicts between France and other nations. Both Trelane and Q had an interest in the Napoleonic wars. [1] | 
  | Neural civil war [2] | Conflict fought between the hill people and the villagers of the planet Neural circa 2267. The Klingons were supplying the villagers with flintlock rifles; Captain Kirk did the same for the hill people. The name of the planet is not in the episode, but is from the script. [2] | 
  | Norkan Campaign [3] | Known as the Norkan Massacre by the Federation, this conflict was fought by the Romulans under the leadership of Admiral Jarok. The timeline is unknown, but probably within a few decades before 2366. The opponents are also unknown, but may have been the Federation itself. [3] |