Rolf is the founder of the Society for Combat Archaeology (SoCA). He holds an MA degree in Maritime Archaeology from the University of Southampton and another MA degree in Prehistoric Archaeology from the University of Copenhagen. His studies have preeminently been on the subject of combat and conflict in the past, ranging from Mesolithic violence to organized state formation in the Renaissance. He has achieved the rank of sergeant in the Royal Danish Army. In addition to this, Rolf is the chief instructor of Weapons Combat Systems, a weaponry-based martial art which he teaches on both a national and international level through classes, seminars, etc.