CK3 DatabaseCrusader Kings III · 1.20.0.3 “Crozier” · unofficial

Casus belli · Civil wars and factions

Install Ruling Regent

The war is called “War to Install the claimant as Regent”

Install Ruling Regent is a casus belli in Crusader Kings III (civil wars and factions). If the attacker wins: The defender will be Imprisoned and have all land confiscated by the attacker. If the defender wins: The defender keeps their Titles and imprisons all rebelling Vassals. The war goal is worth 80% war score. Patch 1.20.0.3, from game/common/casus_belli_types/10_tgp_faction_wars.txt.

Quick answers (2)
What do you get for winning a Install Ruling Regent war in CK3?
The defender will be Imprisoned and have all land confiscated by the attacker (patch 1.20.0.3).
What happens on a white peace?
The defender keeps their Titles. A Title Revocation Reason is given on every rebelling Vassal.

How the war ends

Attacker wins

The defender will be Imprisoned and have all land confiscated by the attacker.

White peace

The defender keeps their Titles. A Title Revocation Reason is given on every rebelling Vassal.

Defender wins

The defender keeps their Titles and imprisons all rebelling Vassals.

If the war becomes invalid

The … has ended: it was no longer valid to continue.

Who can declare it

The game shows no text of its own for these conditions; the script is below.

Every civil wars and factions war (the group's allowed_for_character) (1 line of game script)
herders_and_tributary_constraints = yes

As written in game/common/casus_belli_groups/00_casus_belli_groups.txt.

Attacker (allowed_for_character) (3 lines of game script)
scope:attacker = {
	is_leading_faction_type = replace_ceremonial_regent_faction
}

As written in game/common/casus_belli_types/10_tgp_faction_wars.txt.

Defender (allowed_against_character) (1 line of game script)
scope:attacker.liege = scope:defender

As written in game/common/casus_belli_types/10_tgp_faction_wars.txt.

Source: game/common/casus_belli_types/10_tgp_faction_wars.txt and the English localisation, Crusader Kings III 1.20.0.3. “The attacker”, “the defender” stand where the game names the character; “…” marks other words it fills in during play.