Blue Duel Infantry

Blue Duel Infantry Icon of the B Duel Infantry 1 skill in Heroes. Grants HP+3. If unit is 5★ and level 40 and unit's stats total less than 160, treats unit's stats as 160 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)

Type(s) Passive (Type A) Game(s) Heroes

Blue Duel Infantry (Japanese: 青の死闘・歩行 Blue Mortal Combat · Infantry) is a four-tiered passive type A skill which debuted in Fire Emblem Heroes; the individual tiers of the skill are known as B Duel Infantry 1, B Duel Infantry 2, B Duel Infantry 3, and B Duel Infantry 4 in order from lowest to highest. Units with a B Duel Infantry skill grants its user a boost to their HP no matter the situation with the fourth tier adding a boost in the user's other stats, but an additional effect activates upon the user reaching level 40 at five-star rarity—should the sum of their stats be less than a certain threshold not factoring in merges and other skills, the game will treat their stats as if it were at that threshold in modes such as the Arena, thus allowing higher-scoring opponents to appear; both the HP boost and the stat threshold increase with the skill's tier, with the fourth tier granting a larger boost in the latter to those not termed Legendary or Mythic Heroes.

Data

Game	Icon	Effect	Activation	Capacity	Notes
Heroes (B Duel Infantry 1)		Boosts user's HP by +3 If user is level 40 at five-star rarity and the sum of their stats is less than 160 not factoring merges and other skills, treats user's stats as sum 160 in modes such as the Arena, allowing higher-scoring units to appear.	--	--	Cost: 70 SP
Heroes (B Duel Infantry 2)		Boosts user's HP by +4 If user is level 40 at five-star rarity and the sum of their stats is less than 165 not factoring merges and other skills, treats user's stats as sum 165 in modes such as the Arena, allowing higher-scoring units to appear.	--	--	Cost: 150 SP
Heroes (B Duel Infantry 3)		Boosts user's HP by +5 If user is level 40 at five-star rarity and the sum of their stats is less than 170 not factoring merges and other skills, treats user's stats as sum 170 in modes such as the Arena, allowing higher-scoring units to appear.	--	--	Cost: 300 SP
Heroes (B Duel Infantry 4)		Boosts user's HP by +5 and user's Attack, Speed, Defense, and Resistance by +2 each If user is level 40 at five-star rarity and the sum of their stats is less than (175 if a Legendary or Mythic Hero, 180 otherwise) not factoring merges and other skills, treats user's stats as sum (175 if a Legendary or Mythic Hero, 180 otherwise) in modes such as the Arena, allowing higher-scoring units to appear.	--	--	Cost: 300 SP

Availability

Heroes

B Duel Infantry 4

Units

Marianne: Adopted Daughter • Ninian: Frozen Heart

Flavor text

Game	Text (English)	Text (Japanese)
Heroes (B Duel Infantry 1)	Grants HP+3. If unit is 5★ and level 40 and unit's stats total less than 160, treats unit's stats as 160 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)	ＨＰ＋３ 自分が★５かつレベル４０の時、闘技場などで、 自分の能力値が低くても、スコアの高い敵が登場する （限界突破やスキル等を加味しない場合の 自分の能力値合計が１６０より低い場合、 自分の能力値合計が１６０として扱われる）
Heroes (B Duel Infantry 2)	Grants HP+4. If unit is 5★ and level 40 and unit's stats total less than 165, treats unit's stats as 165 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)	ＨＰ＋４ 自分が★５かつレベル４０の時、闘技場などで、 自分の能力値が低くても、スコアの高い敵が登場する （限界突破やスキル等を加味しない場合の 自分の能力値合計が１６５より低い場合、 自分の能力値合計が１６５として扱われる）
Heroes (B Duel Infantry 3)	Grants HP+5. If unit is 5★ and level 40 and unit's stats total less than 170, treats unit's stats as 170 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)	ＨＰ＋５ 自分が★５かつレベル４０の時、闘技場などで、 自分の能力値が低くても、スコアの高い敵が登場する （限界突破やスキル等を加味しない場合の 自分の能力値合計が１７０より低い場合、 自分の能力値合計が１７０として扱われる）
Heroes (B Duel Infantry 4)	Grants HP+5, Atk/Spd/Def/Res+2. If unit is 5★, level 40, a Legendary Hero or a Mythic Hero, and unit's stats total less than 175, treats unit's stats as 175 in modes like Arena. If unit is 5★, level 40, not a Legendary Hero or Mythic Hero and unit's stats total less than 180, treats unit's stats as 180 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)	ＨＰ＋５、攻撃、速さ、守備、魔防＋２ 自分が★５かつレベル４０の時、闘技場などで、 自分の能力値が低くても、スコアの高い敵が登場する （伝承英雄、神階英雄は、 限界突破やスキル等を加味しない場合の 自分の能力値合計が１７５より低い場合、 自分の能力値合計が１７５として扱われる） （上記以外の英雄は、 １８０より低い場合、１８０として扱われる）

Etymology and other languages

Names, etymology and in other regions
Language	Name	Definition, etymology and notes
English	Blue Duel Infantry	Abbreviated as B Duel Infantry.
Japanese	青の死闘・歩行	Blue Mortal Combat · Infantry
Spanish	Lid pedestre Azul	Walking fight Blue; abbreviated as Lid pedestre A.
French	Duel infanterie (Bleu)	Duel infantry (Blue); abbreviated as Duel infant. (B).
German	Blauer Duell-Infanterie	Blue Duel Infantry; abbreviated as B Duell-Inf.
Italian	Sfida fanteria Blu	Infantry challenge Blue; abbreviated as Sfida fanteria B.
Portuguese (Brazil)	Duelo infanteria Azul	Duel infantry A; abbreviated as Duelo infan. A.
Traditional Chinese	青色死鬥・步行	Blue mortal struggle · walking

See also

• Blue Duel Cavalry
• Blue Duel Flying
• Colorless Duel Cavalry
• Colorless Duel Flying
• Colorless Duel Infantry
• Green Duel Cavalry
• Green Duel Flying
• Green Duel Infantry
• Red Duel Cavalry
• Red Duel Flying
• Red Duel Infantry

Type A passive skills in Heroes

Aether Raids skills AR-D Atk/Def • AR-D Atk/Res • AR-D Atk/Spd • AR-D Def/Res • AR-D Spd/Def • AR-D Spd/Res • AR-O Atk/Def • AR-O Atk/Spd • AR-O Spd/Res Bonus damage skills Ashera's Chosen • Dragonskin • Dragoon Shield • Grani's Shield • Iote's Shield • Svalinn Shield Counter-attack skills Close Counter • Close Foil • Close Reversal • Close Salvo • Close Ward • Distant Counter • Distant Dart • Distant Foil • Distant Pressure • Distant Stance • Distant Storm • Distant Ward • Ostian Counter Proximity skills Ashera's Chosen • Atk/Def Bond • Atk/Def Form • Atk/Def Solo • Atk/Def Unity • Atk/Res Bond • Atk/Res Form • Atk/Res Solo • Atk/Res Unity • Atk/Spd Bond • Atk/Spd Form • Atk/Spd Solo • Atk/Spd Unity • Def/Res Bond • Def/Res Form • Def/Res Solo • Laws of Sacae • Sorcery Blade • Spd/Def Bond • Spd/Def Form • Spd/Def Solo • Spd/Res Bond • Spd/Res Form • Spd/Res Solo Stat boosting skills Attack + • Attack/Def + • Atk/Def Catch • Atk/Def Ideal • Atk/Def Push • Attack/Res • Atk/Res Catch • Atk/Res Ideal • Atk/Res Push • Atk/Spd • Atk/Spd Catch • Atk/Spd Ideal • Atk/Spd Push • B Duel Cavalry • B Duel Flying • B Duel Infantry • Bonus Doubler • Brazen Atk/Def • Brazen Atk/Res • Brazen Atk/Spd • Brazen Def/Res • Brazen Spd/Def • Brazen Spd/Res • C Duel Cavalry • C Duel Flying • C Duel Infantry • Defense + • Def/Res Catch • Def/Res Ideal • Def/Res • Defiant Atk • Defiant Def • Defiant Res • Defiant Spd • Distant Pressure • Dragoon Shield • Earth Boost • Fire Boost • Fortress Def • Fort. Def/Res • Fortress Res • Fury • G Duel Cavalry • G Duel Flying • G Duel Infantry • HP + • HP/Atk • HP/Def • HP/Res • HP/Spd • Life and Death • R Duel Cavalry • R Duel Flying • R Duel Infantry • Resistance + • Scendscale • Speed + • Spd/Def • Spd/Def Ideal • Spd/Res • Still Water • Triangle Adept • Water Boost • Wind Boost Turn-related skills Armored Blow • Blade Session • Bracing Blow • Bracing Stance • Close Def • Close Foil • Close Reversal • Close Ward • Darting Blow • Darting Breath • Darting Stance • Death Blow • Distant Def • Distant Foil • Distant Ward • Dragonskin • Fierce Breath • Fierce Stance • Kestrel Stance • Laws of Sacae • Mirror Impact • Mirror Stance • Mirror Strike • Shield Session • Steady Blow • Steady Breath • Steady Impact • Steady Posture • Steady Stance • Sturdy Blow • Sturdy Impact • Sturdy Stance • Sturdy Surge • Surge Sparrow • Swift Sparrow • Swift Stance • Swift Strike • Warding Blow • Warding Breath • Warding Stance Miscellaneous skills Flashing Blade • Heavy Blade • Mila's Turnwheel