As a belgian who has always had an intrest in britain, i have always wondered.. On what legal grounds does a royal guard have the authority to do.. what exactly? Like i assume its a tradition kind of thing, but what would let them actually interfere? Say in extreme cases the palace would be under some sort of attack, are they supposed to protect it? I assume yes, but in what way? Its mostly said the guns are unloaded, so what would they do incase something happens to wich they’re authorised to intervene, and what would such scenario be? Also, does that mean they break their role, or do they also have very strict instructions on what to do incase of said scenario unfolding?

Thanks for reading!