Civil war

A civil war was a war in within an individual state or within one species.

For a war involving one species, the species had to have encountered another alien species.

Known Civil Wars

 * English Civil War
 * American Civil War
 * Spanish Civil War
 * Great Civil War - a conflict between the Daleks loyal to the Emperor Dalek and humanised Daleks "infected" with the Human Factor. (TV: The Evil of the Daleks)
 * Imperial-Renegade Dalek Civil War - a conflict between the Renegade Daleks loyal to the Supreme Dalek and the Imperial Daleks loyal to Davros. (TV: Revelation of the Daleks, Remembrance of the Daleks)