CK3 DatabaseCrusader Kings III · 1.20.0.3 “Crozier” · unofficial

Casus belli · Civil wars and factions

Claimant Faction

The war is called “War for the claimant's Claim on the …”

Claimant Faction is a casus belli in Crusader Kings III (civil wars and factions). If the attacker wins: The Claimant takes control of the contested Title. If the defender wins: The contested Title remains with the defender. All rebelling Vassals are Imprisoned. The war goal is worth 80% war score. Patch 1.20.0.3, from game/common/casus_belli_types/00_civil_war.txt.

Quick answers (2)
What do you get for winning a Claimant Faction war in CK3?
The Claimant takes control of the contested Title (patch 1.20.0.3).
What happens on a white peace?
The contested Title remains with the defender. A Title Revocation Reason is given on every rebelling vassal.

How the war ends

Attacker wins

The Claimant takes control of the contested Title.

White peace

The contested Title remains with the defender. A Title Revocation Reason is given on every rebelling vassal.

Defender wins

The contested Title remains with the defender. All rebelling Vassals are Imprisoned.

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The … has ended: it was no longer valid to continue.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

As written in game/common/casus_belli_types/00_civil_war.txt.

Defender (allowed_against_character) (4 lines of game script)
exists = scope:attacker.joined_faction
scope:attacker.joined_faction = {
	special_title.holder = scope:defender
}

As written in game/common/casus_belli_types/00_civil_war.txt.

Source: game/common/casus_belli_types/00_civil_war.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.