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Research · Military

Ironclad Mail

Plate over mail over padding — raises troop defense further still.

Entity ID
ironclad_mail
Branch
Military
Stat buffed
defense — Defense
Bonus per level
+1.2%
Maximum level
10
Bonus at maximum level
+12%
Power per level
82
Power at maximum level
820
Base study time
35 seconds
Study time at maximum level
23m 43s
Prerequisites
Tempering at level 5

Cost, time and bonus at every level

Ironclad Mail runs to level 10, adding +1.2% to defense and 82 power each time. Studying it out costs the four soft resources — the same amount of each — and takes 23m 43s for the final level alone. Gems are only ever the optional instant finish; the study itself is bought with what your fields already make.

Ironclad Mail: what each level costs and what it grants.
LevelTotal defensePowerStudy timeEach resourceGems to finish instantly
1+1.2%822m 14s12,0003
2+2.4%1642m 54s15,6003
3+3.6%2463m 47s20,2804
4+4.8%3284m 55s26,3645
5+6%4106m 23s34,2737
10+12%82023m 43s127,25424

Taken from nothing to level 10 that is 1h 35m of raw study and 511,434 of each of food, wood, stone and iron — 2,045,736 resources in total.

Where it sits in the tree

Ironclad Mail belongs to the Military branch — the offence line — what your swords, horses and bows hit for. It stays locked until Tempering reaches level 5. Studying it opens 1 further tech.

Techs gated behind Ironclad Mail.
TechBranchRequires this tech at level
The Unbroken LineMilitary5

The road here: Weaponry to level 3 → Armor to level 10 → Tempering to level 5 → Ironclad Mail. That is 3 studies standing between a fresh Academy and this one.

What Ironclad Mail costs before its own first level: the prerequisite chain, at the levels it demands.
PrerequisiteLevel requiredEach resourceStudy time
Weaponry347,88040m 47s
Armor10511,4347h 15m
Tempering5108,51720m 13s
Total before you may begin—667,8318h 16m

What it eventually opens: 2 studies sit downstream of Ironclad Mail, counting every remove.

Everything gated behind Ironclad Mail, directly or at a remove.
StudySteps outBuffsAt its capStudy time at cap
The Unbroken Line1defense+7.2%13m 3s
The Long Memory2production_rate+6%10m 57s

Guide: Research & the Academy · Research Priorities. Studied at the Maester's Academy. Index: all 81 studies · the whole database.

Rest of the Military branch: Weaponry · Armor · Drilling · Swordsmanship · Archery · Marksmanship · Spearwork · Blacksmithing · Forged Steel · Shieldwork · Infantry Discipline · Tempering · Horsemanship · Cavalry Tactics · Warhorses · Muster Rolls · Quartermastery · Battle Drums · Baggage Trains · Supply Columns · Pattern Welding · The Unbroken Line · The Standing Army

Every figure above is generated from the shipped game code — the same constants and formulas the running game uses — and regenerated whenever the balance changes. Nothing on this page is hand-typed.

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