The questing knight, the conquering overlord, the king's champion, the elite foot soldier, the hardened mercenary, and the bandit king -- all are fighters. Fighters can be stalwart defenders of those in need, cruel marauders, or gutsy adventurers. Some are among the land's best souls, willing to face death for the greater good. An adventuring fighter might call himself a warrior, a mercenary, a thug, or simply an adventurer.
In adventuring parties, the fighter serves as a front-line melee combatant, charging into the fray while his comrades support him with spells and ranged attacks.
All simple and martial weapons, all armor, and all shields.
(2 + INT modifier) * 4 at first level; 2 + INT modifier each additional level