Kämpfer either use three type of weapons: magic (Zauber), swords/blades (Schwert) or handguns (Gewehr). These weapons can vary and do not always have to be the same, for example, the main character, Natsuru Senō, uses zauber which is flame based but one of the white kämpfer, Hitomi Minagawa, uses zauber that is energy based.
In RPG terms, Zauber would be Caster, Schwert would be Melee, and Gewehr would be Ranged.