战争

战争

战争

太空战

地面战

As long as there is at least one empire present that is not  极端和平主义（Fanatic Pacifist）, war is an almost inevitable aspect in any game and can be anything from a small border skirmish to a massive interstellar war of conquest.

Wars are how mid-game and end-game borders are usually drawn.

Casus belli and wargoals

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In order for an empire to start a war, it needs a  宣战理由（Casus Belli） – a reason to declare war. Each casus belli grants access to at least one type of wargoal, which represents the purpose of the war. Once a war is declared, the attacked empire has a year to choose its wargoals.

Status quo effects do not include the defender's capital. In case of status quo the defender will retain its capital system regardless of occupation.

Casus belli and wargoals	Requirements	Surrender acceptance	Victory effect	Status quo effect
Claim Conquer	Existing claims on the target's systems	−10 per system −100 per colonized system	Loser cedes all systems with claims to the victor, even if not occupied. All systems occupied by the loser are returned, regardless of claims.	Each side keeps all systems they have fully occupied if they have claims on them.
Counterattack Counterattack	共同防御（Mutual Defense） resolution 3 Target is not a member of the Galactic Community Target is at offensive war with a Galactic Community member	0	Loser cedes all systems with claims to the victor, even if not occupied. All systems occupied by the loser are returned, regardless of claims.	Each side keeps all systems they have fully occupied if they have claims on them.
Subjugation Vassalize Make Tributary Make Subsidiary	Demand Subject Status diplomatic action was refused	−100	Loser becomes a subject of the victor, along with all its vassals (if any). If the empire is part of a federation, they will leave it.	All systems fully occupied by the attacker will be turned into a subject of the attacker.
Animosity Humiliate	Rivalry	−25	Victor gains 100  影响力（Influence）. Loser loses all of its  影响力（Influence）, gains   −33% monthly influence gain and   10% 幸福度（Happiness） for 10 years. If the loser had the  霸权主义（Supremacist） Diplomatic Stance policy, it is changed to  恃强凌弱（Belligerent）.	Each side keeps all systems they have fully occupied if they have claims on them.
Imperial Rebuke Imperial Rebuke	Rivalry and Galactic Emperor	−25	Victor gains 100  影响力（Influence）. Loser loses all of its  影响力（Influence）, gains   −33% monthly influence gain and   10% 幸福度（Happiness） for 10 years. If the loser had the  霸权主义（Supremacist） Diplomatic Stance policy, it is changed to  恃强凌弱（Belligerent）.	None
Ideology Impose Ideology	War philosophy policy set to Liberation Wars Target is not a Gestalt Consciousness	−100	Loser is forced to shift ethics towards those of the victor and will leave a federation if it's part of one. Its ruler is also replaced.	All systems fully occupied by the attacker will be turned into an empire with the attacker's ethics.
Punishment Humiliate Stop Atrocities Outlaw AI Cleanse Holy Worlds Decontaminate Border Territories	Only available to fallen empires Either the fallen empire's demand was refused or they were rivaled	0	The refused demands are enforced. If the losing empire is not a  格式塔意识（Gestalt Consciousness）, its ruler will also be assassinated by the winning fallen empire, unless they are the Ancient Caretakers. Includes Animosity effects.	None
Despoliation Plunder	野蛮掠夺者（Barbaric Despoilers） civic	−25	Loser loses   250 能量币（Energy Credits） and   250 矿物（Minerals） for every planet they own. Victor will then gain those resources even if the loser didn't have enough. Loser gets −20%  能量币（Energy Credits） and  矿物（Minerals） for 10 years.	Each side keeps all systems they have fully occupied if they have claims on them.
Expropriation Expel Corporation	No shared Commercial Pact or Federation Corporate empire has at least one branch office on an owned planet	−50	Corporate empire closes all branch offices on the attacker's planets. Attacker gains 1000  能量币（Energy Credits） per branch office.	Corporate empire closes all branch offices on the attacker's planets. Corporate empire gains 1000  能量币（Energy Credits） per branch office.
Hostile Takeover Seize Assets	Both empires have Corporate authority Target has at least one branch office Criminal Heritage civic	−75	All branch offices on planets whose owners have a commercial pact or federation with victor are transferred to the victor. If loser is part of a federation, branch offices on other members' planets are kept.	None
Claim the Galatron Take Galatron	Target empire has the Galatron relic Driven Assimilator civic Genocidal	−40	Victor gains the Galatron relic and 100  影响力（Influence）. Loser loses all of its  影响力（Influence） and gains   −33% monthly influence gain and   −10% 幸福度（Happiness） for 10 years.	Attacker gains 1000  能量币（Energy Credits）.
Hegemon Establish Hegemony	President of a level 3+ Hegemony federation Target is not in federation	−100	Loser becomes a member of the victor's  霸权（Hegemony）	All systems fully occupied by the attacker will be turned into a new member empire of the attacker's  霸权（Hegemony）.
Scion Bring Into Fold	先辈子弟（Scion） origin	−100	Loser becomes a subject of the Scion's overlord. If the empire is part of a federation, they will leave it.	All systems fully occupied by the Scion will be turned into a subject of the Scion's overlord.
Imposed Inclusion Bring Into Fold	化身天灾（Become the Crisis） ascension perk	−100	Loser becomes a subject of the victor, along with all its vassals (if any). If the empire is part of a federation, they will leave it.	All systems fully occupied by the crisis empire will be turned into a new vassal empire of the attacker.
Trial of Advancement Council Seat	Target is a member of the Imperial Council By Trial of Advancement resolution	−100	The victor replaces the loser in the Imperial Council.	None
Imperial Crusade Force Into Imperium	Imperial Crusade resolution	−100	Loser joins the Galactic Imperium. If the empire is part of a federation, they will leave it.	All systems fully occupied by members of the Galactic Imperium will be turned into a member of the Galactic Imperium.

Paired wargoals

The following wargoals are paired together. If an empire starts a war with either of the paired wargoals the defender will automatically use the other wargoal and cannot pick another one.

Paired wargoals with −1000 surrender acceptance lead to a Total War. In Total Wars, all occupied systems automatically change ownership. Their new owner will be the participant with the highest claim count on it or the occupier if none of his allies claim this system.

Casus belli and wargoal 1	Casus belli and wargoal 2	Requirements	Surrender acceptance	Victory effect	Status quo effect
Subject Independence	Subject Assert Overlordship	Subject and overlord Subject not in a federation with overlord	0	If the subject wins, it becomes independent and the former overlord loses all claims on the former subject's systems.	The subject becomes independent and the former overlord gains claims on the former subject's systems.
Secession Leave Hegemony	Secession Assert Hegemony	President refused member to leave federation	0	If the attacker wins, it leaves the federation and the president loses all claims on the former member's systems. If the president wins, both empires gain a temporary   −20 评价（Opinion） towards each other.	The attacker leaves the federation and the president gains claims on the former member's systems.
Imperium Restore Community	Imperium Crush the Rebellion	Imperium: Spark Rebellion operation	0	Losers gain -60%  外交权重（Diplomatic Weight） for 6 years. If the attackers win the Galactic Imperium becomes the Galactic Community again. If the defenders win the Galactic Imperium gains 100 Authority.	All attackers leave the Galactic Imperium and form a federation.
Containment End Threat	Subjugation Domination	Awakened Empire	−1000 (Total War)	Victory can only be achieved by conquering all colonized systems of the opposition, ending the opposing empire. If a defeated empire had starbases in uncolonized systems that were not conquered, they are removed, making the territory neutral again.	Each side keeps all conquered systems. In case of the Existential Expulsion war goal, uncolonized systems become neutral during the war.
	Purification Cleansing	种族洁癖（Fanatic Purifiers） or  铁心灭绝者（Determined Exterminator）
	Hunger Absorption	噬杀蜂群（Devouring Swarm）
	Sublimation Assimilation	同化斗士（Driven Assimilator）
	Existential Expulsion Wipe Them Out	化身天灾（Become the Crisis） ascension perk
Colossus Colossus	Stop Colossus Stop Colossus	Either empire has a Colossus
Preemptive War Preemptive War	Self-Defense End Threat	共同防御（Mutual Defense） resolution 5 One empire is not a member of the Galactic Community
Crisis War Crisis War	Crisis War Crisis War	Declare Crisis resolution Repeal Crisis resolution
Event War in Heaven	Event War in Heaven	Awakened Empire
Event Machine Uprising	Event Machine Uprising	Creator empire and AI rebellion	−1000 (Total War)	Victor gains 2000-6000  凝聚力（Unity） and 200-600  影响力（Influence）. Victory can only be achieved by conquering all colonized systems of the opposition, ending the opposing empire. If a defeated empire had starbases in uncolonized systems that were not conquered, they are removed, making the territory neutral again.	Each side keeps all conquered systems.

Claims

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While casus belli and wargoals represent the purpose of a war, claims represent territorial ambitions — the systems which will be controlled by the victor. Which systems can be claimed depends on an empire's War Philosophy policy, with the Unrestricted Warfare philosophy allowing for the claiming of any system not owned by a fellow  联邦（Federation） member. It is possible to claim the same system multiple times to gain a stronger claim on it, which can outbid the competing claims of allies when going to war together. If multiple empires have the same number of claims on a system the oldest claim is considered the strongest. In general claims are expensive in the early game and become less so later on to allow for more decisive wars to be fought. Claims cannot be rescinded while at war.

Claims have a base cost of 50  影响力（Influence）, modified by the following:

1. Additive costs:
   • +25 per hyperlane distance from owned territory
   • +25 if the system has an upgraded  恒星基地（Starbase） (i.e. not just an Outpost)
   • +25 if the system is colonized
2. Additive multipliers:
   • +100% during an offensive war
   • –10% Expansionist Overtures Ruler agenda
   • –10%  恃强凌弱（Belligerent） or  霸权主义（Supremacist） Diplomatic Stance policy
   • –10%  星际战役（Interstellar Campaigns） technology
   • –10%  星河战役（Galactic Campaigns） technology
   • –10%  军事同盟（Miltiary Alliance） federation level 2 perk
   • –10%  军国主义（Militarist） ethic
   • –15%  国民主义热忱（Nationalistic Zeal） civic
   • –20%  极端军国主义（Fanatic Militarist） ethic
   • –20%  星际主权（Interstellar Dominion） ascension perk
   • –20%  可汗王座（Khan's Throne） relic
3. –20% if the system is owned by a Rival (multiplicative, after other multipliers)

If the modifier reaches a total of –100%, claims then cost 0  影响力（Influence）.

Defenders can freely claim systems owned by their attackers in a defensive war regardless of their War Philosophy policy. Any system lost by any side during a conquest war or total war will give the former owner 10 claims on it.

Winning war with any non-conquest wargoals will always enforce all claims made by the victorious empires before any other effects, regardless of whether these systems were occupied. For example, an empire winning a war with the subjugation wargoal will annex all claimed systems from the loser before making a  附庸国（Vassal） of the loser's remaining systems.

Federation warfare

The Federation is the more serious counterpart of the Defensive pact and the inviting attackers mechanic. While it does offer a unique amount of defensive cooperation, builds trust and allows military cooperation using the federation fleet, establishing a conquest strategy can be made very difficult because of the need for consent of the members to declare war, and each member's expectation of a fair share of spoils from each war. The empire that wishes to declare war can ask the other federation members for their war goals by using the "Suggest Demands" button. However, AI empires will be very hesitant to declare war on empires that are much stronger than them or have very powerful allies. In that case, the "Suggest Demands" button will not give any results.

One exception to this are wars of liberation or to a lesser extent vassalization: usually AI will agree to a liberation war even if all the war goals are assigned to the player. The resulting splinter empire could then be vassalized and later integrated by the player.

In case a federation member is attacked, all allies automatically join the war as defenders without need for a further declaration of war. In this case, the member being attacked has a free hand in choosing federation war goals, which might be all in its own favor.

War exhaustion

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War Exhaustion goes from 0% to 100%, and measures the total weariness and attrition suffered by all empires on one side in a war. War exhaustion goes up from suffering losses during space and ground warfare, destruction of planets (either from Colossus weapons or  末日审判（Armageddon） Bombardment), and a passive accumulation over time called Attrition. When a side's war exhaustion hits 100% they can be forced into a status quo peace after 24 months. The speed at which war exhaustion accumulates is influenced by factors such as ethics, traditions, technology and the amount of claims being pressed - an empire that is fighting to hold onto a handful of border systems will tire faster in a costly conflict than one whose very independence is being threatened. War exhaustion also means that an empire that is losing a war can still fight to minimize their territorial losses by inflicting high war exhaustion on the enemy.

War exhaust gain can be reduced by the following:

Source	Reduction
传媒集团（Media Conglomerate） civic	−5%
国民主义热忱（Nationalistic Zeal） civic	−10%
星际战役（Interstellar Campaigns） technology	−10%
星河战役（Galactic Campaigns） technology	−10%
恃强凌弱（Belligerent） diplomatic stance	−10%
霸权主义（Supremacist） diplomatic stance	−20%
格式塔意识（Gestalt Consciousness） ethic	−20%
Rules of War resolution 2	−5%
Rules of War resolution 3	−10%
Rules of War resolution 4	−15%
Rules of War resolution 5	−20%
Never Surrender tradition	−25%
Crisis level 2	−75%

Ending wars

Wars can end in two ways: With the surrender of either side or with a negotiated Status Quo peace.

Surrender means that the victor's wargoal is enforced; any claims the winning side has on the losing side are automatically ceded regardless of occupation status and the defeated empire is forced to keep borders open towards the attacker for 10 years. All wars except those of independence have a negative surrender acceptance, which are countered by factors such as relative navy strength (up to +50), war exhaustion (up to +100) and occupation percentage (up to +100). If an empire and all of its allies (if any) has lost control of all of its systems and/or planets during the war, then a surrender will occur automatically.

Status Quo means that the war has reached a point where neither side is able to score a decisive victory against the other or all wargoals have been achieved decisively before any major battles took place, and both sides agree to cease hostilities and settle for whatever gains or losses they have acquired/suffered. Under a Status Quo peace, all fully occupied systems claimed by a belligerent empire are ceded to the belligerent with the strongest claim. In the case of a tie, whoever has the oldest claim on the system is considered the stronger claimant. In addition both sides must keep their borders open towards each other for 10 years. Since AI won't surrender to a Total War, they can end only in Status Quo or the destruction of one empire. Status Quo can be enforced by either side as soon as 24 months have passed since the opposing side reached 100% war exhaustion, and if both sides reach 100% war exhaustion, the Status Quo is enforced automatically after 24 months.

War names

Wars will always be named after the attacker and the defender, followed by one of the following names depending on the wargoal:

Name	Wargoal	Other requirements
War	Any	Offensive war against a Fallen Empire
Federation War Galactic War Great War War of the Alliances	Any	War between two Federations
Annexation Attempt Territorial Invasion War of Aggression War of Conquest	Conquer
War of Beliefs War of Ideologies War of Philosophies	Impose Ideology
Border War Confrontation War of Humiliation War of Rivalry	Humiliate	Regular empire
Punitive Expedition	Humiliate	Fallen Empire
Anti AI Police Action	Outlaw AI
Buffer Zone Creation	Decontaminate Border Territories
Holy Purge	Cleanse Holy Worlds
Moral Intervention	Stop Atrocities
Freedom Struggle Independence War Secessionist War War of Independence War of Liberation	Independence
Servitude Campaign War of Obedience War of Overlordship War of Subjugation	Vassalize
Tributary War	Make Tributary	Not  企业政府（Corporate） authority
Enforced Sponsorship	Make Tributary	企业政府（Corporate） authority
The War In Heaven	War in Heaven
Intervention War Preemptive Action Preventative War Self Protection War	End Threat
War of Cleansing Xeno Filth Removal Xeno Purification	Cleansing	种族洁癖（Fanatic Purifiers） civic
Extermination Campaign Organic Disinfection Program Organic Euthanization War	Cleansing	铁心灭绝者（Determined Exterminator） civic
Absorption War Biomass Accumulation Great Gorging	Absorption
Machine Uprising	Machine Uprising
Subsidiary Acquisition	Make Subsidiary
Hostile Takeover	Hostile Takeover
Embargo War Expulsion War War of Expropriation	Expel Corporation
War for the Galatron	Take Galatron

游戏概念