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Companion | Drake | Eidolon | Eidolon (Unchained) | Familiar | Phantom
Adept | Aristocrat | Commoner | Expert | Warrior

Fighter Class Details | Adv. Armor Training | Adv. Weapon Training | Weapon Groups | Archetypes

Effortless Dual-Wielding (Ex)

Source Blood of the Beast pg. 29
The fighter treats all one-handed weapons that belong to the associated weapon group as though they were light weapons when determining his penalties on attack rolls for fighting with two weapons.