From the back of the book:Blood and Guts brings the action of military combat into the Modern d20 System game! Blood and Guts includes new feats, skills, and occupations for military based campaigns, as well as Prestige Classes for the predominant Special Operations units: Army Rangers, Delta Force, Special Forces, Combat Controllers, Pararescue, Force Recon, Navy SEALs, and others. Blood and Guts also includes rules for military rank and promotion, military medals and decorations, as well as an array of new weapons and equipment. - BoardGameGeek