From LSWiki

Class: Combat Skills

Attribute: Strength
Pedagogy: Physical Training

This skill represents the nerve and muscle conditioning that, beyond raw strength, 
enable one to put great force behind the blows one strikes in combat.  This is more 
helpful with some weapons than others; piercing weapons designed for precision work 
generally are not helped that much by having more force behind them, while blunt 
and slashing weapons benefit a great deal.

See Also: Massive Exertion, Precision Strike, Find Weakness

Trainers

Avalon: Bercilak
Gurbodax: Akurch
Kolond: Duthien (only trains dwarves)
Losthaven: Raelan Jax
Skarlan: Badlokk
Mycenae: Kyros
Obsidia: Goth
Shatterspire: Sthlar
Stillwater: Captain Roberts
Tlaxcala: Axton
Association required:
Guild required:
Aisenshi: Musashi
Battleragers: Borulien
Brute Squad: Fezzik
Hawkmen: Katar
Justicars of Axa: Edwin
Knights of the Round Table: Sir Lancelot
Hantaka: Hasan Wanders
Ordo Ignis Aeternis: Aedryl
Ordo Ignis Aeternis: Iklam wanders
Reapers:Holton Jax
Quest required