Challenge coins have a rich history steeped in military traditions, symbolizing camaraderie, pride, and honor among service members. These small, metal medallions hold a significant place in military culture, with origins dating back to World War I. Beyond their military origins, challenge coins have evolved to serve various purposes, from commemorating special events to building connections in corporate settings. This article delves into the history, significance, design, manufacturing process, collecting culture, and diverse uses of military challenge coins.