Skill: Knowledge: Martial
Knowledge: Martial involves the art of fighting, 'talking' with your fists, and understanding a person, a culture, or an art through combat. It is one of the only Knowledge skills any Warrior or Initiator can share and commiserate with scholars and others that appreciate the art of war.
Mechanically, Knowledge: Martial helps understand all that goes into combat, and is a skill that can be used to supplement physical acts, or replace them with the right skill talents.
Knowledge: Martial uses STR / Strength or INT / Intelligence by default. Knowledge: Martial is a Primary Skill, meaning it is a major skill that can only be gained by mechanics that grant proficiency. Additionally, it is a Knowledge Skill, which means it is a skill that requires a bit of input from the player and the GM to be used effectively, as well as a little bit of intuition on the player's side to use well.
Skill Talents
These Talents can be gained during Character Progression or other means (such as gaining it from a Background, Increasing your Intelligence attribute, gaining the Expert Talent Gain Class Feature, etc).
Like all Skill Talents, these are meant to be good at anyCharacter Level they are obtained.