While state-level bodyguards (e.g., for heads of government) may have lethal authorization, private EPAs are bound by the same self-defense laws as any citizen. This creates the “last resort dilemma”: by the time a threat is imminent enough to justify deadly force, the principal may already be harmed. Thus, modern training emphasizes escape and evasion over confrontation.

The bodyguard operates within a unique sociodynamic relationship known as the principal-agent dyad . Unlike a soldier (who protects the state) or a police officer (who protects the public), the bodyguard’s loyalty is exclusively contractual and dyadic.

The bodyguard occupies a legal grey zone. Unlike law enforcement, EPAs have no public duty to act; their authority derives from private property rights and citizen’s arrest statutes.

The origins of dedicated bodyguards lie in antiquity. The Roman Praetorian Guard (27 BCE) was among the first state-sanctioned protection details, though their political power often threatened the very emperors they swore to protect. Similarly, the Janissaries of the Ottoman Empire and the Samurai of feudal Japan served dual roles as protectors and political enforcers.