War

Types of War in Civilization VI. See Casus Belli for all the complex ways to go to war.

Types Of War

The War and Casus Belli types In Civilization VI.
War Type	Warmonger Penalty	Description	Notes
Declare Surprise War	Heavy
Declare Formal War	Moderate	Used to declare war on a player you have Denounced at least 5 turns ago. No restrictions on which cities you may capture.
Declare Joint War		Establish a Joint war against a target civilization.
Declare Holy War	Moderate	Used to declare war on a power that has Religiously converted one of your cities. All Warmonger penalties halved.
Declare Liberation War	None	Used to declare war on a power that has captured a city from one of your friends or allies. No Warmonger penalty for liberating any of those cities.
Declare Reconquest War	None	Used to declare war on a power that has captured one of your cities. No Warmonger penalties apply.
Declare Protectorate War	None	Used to declare war on a power that has attacked one of your allied City-States. No Warmonger penalty for liberating that City-State.
Declare Colonial War	Moderate	Used to declare war on a power that is two technology eras behind you. All warmonger penalties halved.
Declare War of Territorial Expansion	Egregious	Used to declare war on a power that borders your empire. Must have 2 of your cities within 10 tiles of 2 opponents' cities. Warmonger penalties reduced by 25%.