The tradition of the Royal Guard at Buckingham Palace began in the 17th century under King Charles II, with guards tasked to protect the monarch. Known for their stoic demeanor, the Grenadier, Coldstream, Scots, Irish, and Welsh Guards maintain strict discipline, with laughing strictly forbidden during duty. Despite their serious role, myths persist about Royal Guards laughing, often fueled by tourists attempting to break their composure. While rare, any lapse, like a smirk, risks disciplinary a