CK3 DatabaseCrusader Kings III · 1.20.0.3 “Crozier” · unofficial

Casus belli · Holy wars started by events

Great Holy War

Great Holy War is a casus belli in Crusader Kings III (holy wars started by events). If the attacker wins: Titles in the target kingdom are handed out to the beneficiaries. Gold and Piety is spread among all participants. If the defender wins: No titles change hands. The defenders divide Piety won. Patch 1.20.0.3, from game/common/casus_belli_types/00_religious_war.txt.

Quick answers (2)
What do you get for winning a Great Holy War war in CK3?
Titles in the target kingdom are handed out to the beneficiaries. Gold and Piety is spread among all participants (patch 1.20.0.3).
What happens on a white peace?
There can be no white peace.

How the war ends

Attacker wins

Titles in the target kingdom are handed out to the beneficiaries. Gold and Piety is spread among all participants.

White peace

There can be no white peace

Defender wins

No titles change hands. The defenders divide Piety won.

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The … has ended: it was no longer valid to continue.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 holy wars started by events war (the group's allowed_for_character) (3 lines of game script)
herders_and_tributary_constraints = yes
tgp_dynastic_cycle_offensive_wars_ban_trigger = yes
tgp_war_ban_all_ministers_trigger = yes

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

Attacker (allowed_for_character) (1 line of game script)
always = yes

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

When it can start (valid_to_start) (14 lines of game script)
scope:target = {
	tier = tier_kingdom
	any_in_de_jure_hierarchy = {
		continue = {
			tier > tier_county
		}
		tier = tier_county
		scope:attacker.rite = {
			is_hostile_enough_for_holy_war_trigger = {
				RITE = prev.holder.top_liege.rite
			}
		}
	}
}

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

Source: game/common/casus_belli_types/00_religious_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.