From LSWiki

Class: Combat Skills

Attribute: Perception
Pedagogy: Physical Training

The ability to orchestrate one's attacks in combat so as to cause the most damage, 
not through putting raw force behind them, but by striking at vital and vulnerable 
areas.  Knowledge of anatomy and the skill of finding weakness dovetail exceedingly 
well with this skill.  Your ability to apply this skill is somewhat dependent on the 
weapon you use; cruder and less precise weapons are not well-suited to this technique.  
Generally, piercing weapons are those designed to be used this way, while most slashing 
and blunt weapons benefit much less.  Among blunt weapons, staves and hammers are the 
most suited to precision work.

See Also: Massive Blow, Anatomy, Find Weakness

Trainers

Aumbrie: Rindol Meadowdark requires you to have given him a rare book
Caern Argnash: Eldest Ruggsh only teaches "the pups"
Darkhold: Tusk
Fort Shantaari: Trambor
Gezuun: She-Who-Rises
the Green Chapel: Bercilak
Iaocia: Perle only trains expressly authorized employees
Kolond: Duthien only trains thondur?
Leah's Hill: Chemistrius
Liathyr: Mitaliel
Losthaven: Raelan Jax
Mycenae: Kyros
Obsidia: Goth
Othrys: Ripheus
Shadow Tower: Boko
Shatterspire: Sthlar
Stillwater: Captain Roberts
Tlaxcala: Axton
Valathyr: Mitandim only trains fey races of suitable alignment?
Vanishing Tower: Jhary a'Conal
Association required:
Fianna: Cailte Leafwalker
Hawkmen: Katar
Hawkmen: Shayera
Maidens of the Spear: Sulin
Questors of Axa: Cerradin
Questors of Axa: Edwin
Questors of Axa: Merianna
The Stalkers of the Gate: Kalyxes
Synodia Lykouros: Karth the Elder
Synousia Algesis: Sithyrr
Wandslingers: Clyde
Guild required:
Aisenshi: Musashi
Aliavelyrae: Celeborn
Coven: Leah
Coven: Lynda Xenetha
Hantaka: Hasan
Knights of the Round Table: Sir Lancelot
Ordo Ignis Aeternis: Badlokk Wanders Skarlan