The Watchman serves as a warrior who protects the life of Agamemnon. He should be able to save his head from troubles. He is Agamemnon’s slave as well. He serves as a person, who is deprived of all rights and is the full property of the owner who manages his work and life. He represents slavery of that historical period. It appears in forcibly subordinating one person to another or one group of people to another group of people. Slaves are "owned" by certain individuals or organizations, and "owners" view slaves as tools or cattle that can be sold, exchanged, or even killed.
The Watchman in the Essays