Need a new combat skill

I need to think of a new combat type skill, on par with these others :

1 Handed Weapons
2 Handed Weapons
Simple/Thrown/Unarmed
Gunpowder Weapons
Bows & Crossbows
Dirty Fighting

The one being removed is Armour & Shields, which after play testing has been found to be not fun.

There are magic skills, but they're spell schools so if you suggest something magic related, not a spell school. Give suggestions?

Leadership
Martial Perception
Parrying
Dodging
Grappling
Ki/Chi/Qui/whatever
Wuxia wire-fu
Wuxia other stuff

Leadership is already covered, dodging/grapple/parry is covered by dirty fighting. Leadship has its own skill under social skills. Tell me more what you think by Martial Perception?

Anticipation of incoming blows or surprises, which sounds like you're lumping under Dirty Fighting, recognizing your opponent's stance and abilities, weaknesses and strengths and knowing how he's going to use them.

>ki and wirefu aren't the same
Dude, you known the wires are made of pure ki right?

If I put Martial Perception/Awareness, would being able to know roughly their stats and movesets, etc on top of weaknesses be a bit strong?

It's as strong as you and the ref and the dice make it. For example, maybe the opponent can invest in the skill and roll to hide their style. Maybe the player only gets qualitative measures of the stats in question. Maybe only one success doesn't give the full moveset or misses a critical weakness. In any case a well-made party will probably only have one guy investing in it to fill the strategist role.

Has any system implemented different martial arts disciplines? It could work the same way as spells and spell schools

I think if I rename it "Combat Strategy" this can also be applied for players in charge of armies and squads and such.

Simple/Unarmed generally covers this, there is a system which allows martial arts via the use of stamina. But maybe you get a temp buff if you crit success.