The warrior is the basis for all fighters on a battlefield. This is the individual to whom Battle is Life. They live or die by the sword. All soldiers, both trained and untrained, fall under this heading.
All Military ranks and Militias are by default Warriors. Norsemen, Charioteers, Gladiators, Brigands, Skirmishers, Pikemen, Shieldmaidens, Militia, Samuraii, Warmongers, and Centurions are all types of Warriors.
They are capable of using any weapon on the battlefield. They have use of even the heaviest weaponry such as Double Bladed Battle Axes and Claymores in addition to any ranged weapon. (No one can use a bow and sword at the same time though; they may carry both, but only equip one at a time.)
Warriors are the only class allowed tower shields. At the rank of 3, a Warrior can combine their specialized use of two handed weapons with a shield.
So in this regard they are allowed D3 on the meter. Yet as they have an innate ability to resist AoE (area of effect) Magic, they do not add in MR. It is built in to the meter when they select their class.
Warriors are allowed to use Rage Huds; Rank 1 uses the level 1 hud, and it corresponds onwards to the level 4/5 hud at the appropriate rank.
They tend to shy away from Magic but have been known to use limited healing potions once they become familiar with "wizardly types".