Heavy Armor - Increases the armor, hit points and damage resistance of the unit
Flaming Shot - increases the damage done to units and buildings. Catapults also become able to damage garrisoned units.
Veterans Required: Mithril Coat - Requires some veterans to be sent into a Dwarven Forge. Dwarven heroes will then have the ability to purchase the Mithril Mail upgrade for 500 resources. The Mithril Mail gives Dwarven heroes extreme resistance to all damage.
Eregion Blades - After the Forged Blades (Magic Blades) upgrade has been purchased by the battalion, this additional upgrade becomes available once the Basic Blacksmithing Studies has been researched from the Library. The Eregion Blades are lighter and more efficient, granting the battalion a higher attack speed.
Gold Tip Arrows - This increases arrow damage against everything, especially buildings.
Golden Eregion Arrows - After the Gold Tip Arrows upgrade has been purchased by the battalion, this additional upgrade becomes available once the Advanced Blacksmithing Studies has been researched from the Library. The Golden Eregion Arrows increase the attack of allied units near the point of impact.
Blinding Shot - Blinding Shot boulders paralyze enemies in the target area but inflict only half damage. Catapults can switch between regular boulders and Blinding Shot boulders. Once this upgrade is purchased at a level 3 Siege Works, it will automatically be applied to all Imladris Catapults.
Basic Blacksmithing Studies - The Scholars research Doriath Blacksmithing. Enables battalions to purchase Eregion Blades.
Basic Military Studies - The Scholars research the military arts of the Noldor. Enables standard units to use a new ability.
Basic Mystical Studies - The Scholars research the mystical arts of Doriath. Allows Loremasters to use abilities.
Note: the above library upgrades must all be bought in order to obtain the second tier of library upgrades.
Advanced Blacksmithing Studies - Additional Loremasters study the blacksmithing of Eregion. Enables Rivendell Archers to purchase the gold-tipped arrows of Eregion.
Advanced Military Studies - Additional Loremasters study the military arts of the Noldor. Unlocks a special ability for elite units.
Advanced Mystical Studies - Additional Loremasters study the mystical arts of Doriath. Allows combined Loremasters to use abilities.