Game concept

Civil War

The game also links it as Civil Wars, Revolt, Revolts, Revolting.

From the game's encyclopedia

A War where one or more Vassals and/or Counties rise in revolt against their Liege. They are most commonly the result of a Faction whose demands have not been met.

Losing a Civil War often has consequences that are more severe than the original demands of the rebelling faction.

The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.

Civil War is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "A War where one or more Vassals and/or Counties rise in revolt against their Liege." It is part of War. The game also links it as Civil Wars, Revolt, Revolts and Revolting. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.

for a guide, post or blog

Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.