I had no idea about HEMA and had to look it up:

A club is a group formed by individuals who practice Historical European Martial Arts (HEMA), which involves the study and reconstruction of European fighting techniques from historical sources such as manuscripts and treatises. These clubs serve as the primary community space where members train, grow, and build relationships through physical conditioning, martial technique drills, sparring, and the practice of related skills like target cutting. HEMA clubs can vary significantly in focus, with many concentrating on specific historical periods or weapons, such as the longsword from the Late Medieval era or the rapier from the Renaissance. Some clubs may also explore military sabre systems, stick-fighting, or even armored combat.