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Combination bonus

From Fire Emblem Wiki, your source on Fire Emblem information. By fans, for fans.
Leif and Nanna activate a lover combination bonus.

In Fire Emblem: Genealogy of the Holy War, a combination bonus is a statistical bonus awarded to a pair of units who are lovers or siblings. When an eligible pair of units stand next to each other on the battlefield, both gain a +20% chance of executing a critical hit. A combination bonus is the only way for a unit who does not possess the Critical skill, either as their own skill or through their weapon's kill bonus, to execute a critical hit; if they already do possess the skill, the +20% bonus is added to their pre-existing critical hit rate. If a combination bonus critical activates, a brief animation indicating this will play before the battle commences (pictured).

Combination bonuses do not explicitly exist in later Fire Emblem series games, with their function incorporated into the support/bond bonus systems.

Calculations

Critical hit rate

Game Formula Notes
Genealogy of the Holy War
Critical rate (without Critical)
(Combination bonus)% +20% critical hit rate when the combination bonus is in effect.
Genealogy of the Holy War
Critical rate (with Critical)
Skl + (Kill bonus - 50) + (Combination bonus)% +20% critical hit rate when the combination bonus is in effect.
A kill bonus of 50 awards the weapon's wielder Critical,
and every kill bonus point above 50 awards +1 to the critical rate.

Sibling pairs

The following pairs of characters are siblings and can thus activate combination bonuses:

Though half-siblings as part of the game's story, Seliph and Julia are not counted as siblings for the purpose of the combination bonus.

See also

Game mechanics
Out-of-battle management Base (Base conversationMy Castle) • Bonus experienceDungeonsGameplay modes (DifficultyCreature Campaign) • GoldMila ShrinesPreparationsRenownShopping (ArmoryBargainsForgeMerchantOnline shopSecret shopVendor) • Supply convoyWorld map
Battles and chapters ArenaBattle saveBossCastleChapter (Alternate routeParalogueSidequest) • ChestCombat forecastEvent tilesHidden treasureObjectivesReinforcementSkirmishTerrain (Hazards) • TurnWeather (Fog of war)
Stats Units ActionAffinityAuthorityBiorhythmCharmClassConstitution (Aid) • DefenseExperienceFollow-up critical coefficientGrowth rateHit pointHoly BloodInventoryLevelLuckMagicMovementResistanceSkillSpeedStrengthWeapon levelWeight
Weapons Brave weaponCritDurabilityHitKill bonusMightPersonal weaponsRangeWeapon experienceWeapon levelWeightWorth
Unit mechanics
and commands
AdjutantAttackAuto-BattleBattalion (Gambit) • Class change (Reclass) • Combat artCrestsDance/Play (GaldrarSing) • Death (Decoy) • DismountDragon VeinFatigueInventoryLaguz transformationLove (JealousyInheritance) • Move AgainPair UpRecruitmentRescue (Capture) • SkillsStaggering BlowStatus conditionsSupportTalkTradeUnit (AvatarBond unitsBonus unitEinherjarLoan unitPrisonerReplacement unitSubstitute character) • Visit
Calculations Attack speedAvoidCritical hit (Combination bonusDodgeTriangle Attack) • Bonus damageHit rate (True hit) • Random number generatorWeapon triangle (Trinity of magic)
Connectivity amiiboDouble DuelDownloadable contentLink ArenaMultiplayer battleOnline shopSpotPassStreetPass
Other BarrierBirthdayGlitchesNew Game +RankingsSound RoomTacticianMultiple endings