This Skill gives a bonus to the Attack of your Siege Engines.
How the bonus actually works:
A certain percentage is added to the base attack stats of all Siege engine units (Catapult, Ram, Trebuchet and Balistician). The Russians' special unit - the Siege Tower - also receives a bonus from this skill.
The base "attack vs. infantry" stat of the Catapult is 180. If you have developed this skill to Advanced, that stat will be increased by 20% to 216 (180 + 20% = 216). The same applies for all other attack types of each unit.
- Apprentice: 10%
- Advanced: 20%
- Master: 30%