36 skills organised exactly like the Academy. The 5 learnable series (Field Tactics, Command, Logistics, Defense, Offense) group all skills you can unlock with medals. The section General-specific skills covers every signature or training skill tied to a particular hero (Rokossovsky — Hero, Eisenhower — Super Commander, etc.).
Each entry details the full description, the L1→L5 progression, the per-level medal cost and the list of generals who carry it.
Generic learnable skill (series 1)

Increase the damage of army units by 0% when fighting in the sea

Increase attack by 0% when fighting in the desert

Increase attack by 0% when fighting in the mountain

Increase attack by 0% when fighting in the jungle

Increase attack by 0% when fighting in the plain

Decrease damage by 0% when attacked from far away

0% chance of a second attack after attacking

0 additional damage when fighting back

0% chance of morale rise after attacking

In land operations there is 0% chance of reducing damage by 0%.

0 additional damage when using infantry to attack

Increase critical strike by 0% when using infantry to attack

0% chance to ignore the effect of trenches when using infantry to attack

Increase attack by 0% when infantry fight in city facilities

0 additional damage when infantry attack cavalry

0 additional damage when infantry attack city defence

0% chance to avoid enemy's attack when commanding infantry

Increase 0 infantry attack in the nearby 3 grids

0 additional damage when using cavalry to attack

Increase critical strike by 0% when using cavalry to attack

0% chance to ignore the effect of barriers when using cavalry to attack

Increase attack by 0% when cavalry fight in city facilities

0 additional damage when cavalry attack infantry

The farther cavalry move, the higher damage cavalry deal

Increase 0 cavalry attack in the nearby 3 grids

0 additional damage when using artillery to attack

Increase critical strike by 0% when using artillery to attack

0% chance to ignore the effect of bunkers when using artillery to attack

Increase attack by 0% when artillery fight in city facilities

0 additional damage when artillery attack city defence

Increase 0 artillery attack in the nearby 3 grids

0 additional damage when using ships to attack

Increase critical strike by 0% when using ships to attack

Increase 0 ship defence in the nearby 3 grids

In sea operations there is 0% chance of reducing damage by 0%
Generic learnable skill (series 2)