Defense
From Heroes of Might and Magic: Olden Era Official Wiki
Defense is a skill that decreases the damage taken by the hero's army in battle.
Levels
Basic Defense
Friendly creatures take –10% Damage from basic attacks.
Advanced Defense
Friendly creatures take –15% Damage from basic attacks.
Cover
Friendly creatures take –20% Damage from Ranged and Long Reach attacks.
Hymn to the Martyrs
Friendly creatures generate +1 Focus Point(s) when they take Damage. This bonus is doubled if the hero knows “Recruitment”.
As Luck Would Have It
Friendly creatures gain +2 Defense for each point of Luck.
Expert Defense
Friendly creatures take –20% Damage from basic attacks.
Shields and Shells
Enemy creatures deal –1 Damage.
Wizard Contract
Friendly creatures take –10% Magic Damage. This bonus is doubled if the hero knows “Diplomacy”.
Unstoppable Force
–15% Attack to enemy creatures.
Skill Synergies
Knowing Defense will give the following benefits to other subskills:
All for One
Friendly creatures gain +2 Defense for each adjacent ally. This bonus is doubled if the hero knows “Defense.”
Friendly creatures gain +2 Defense for each adjacent ally. This bonus is doubled if the hero knows “Defense.”
Avatar of Toughness
Avatar can withstand one extra hit. This bonus is doubled if the hero knows “Defense.”
Avatar can withstand one extra hit. This bonus is doubled if the hero knows “Defense.”
Artifact Effects
Holy Sigil of Uurdt — 
Epic Relic
While worn, grants all unlearned Subskills of the following Skills: Defense, Primal Magic, Recruitment.Epic Relic
Might Skills
Offense
Defense
Leadership
Luck
Resistance
Tactics
Battlecraft
Siegecraft
Recruitment
Combat(Might Exclusive)Magic Skills
BattleMagic
Sorcery
SummonAvatar
Wisdom
DaylightMagic
NightshadeMagic
ArcaneMagic
PrimalMagic
Thaumaturgy(Magic Exclusive)General Skills
Faction Skills
