Watchmen were Stationed: On Watch Towers
Source: TTT
2 Kings 9:17
Now the watchman standing on the tower in Jezreel saw Jehu’s troops approaching, and he called out, “I see a company of troops!” “Choose a rider,” Joram commanded. “Send him out to meet them and ask, ‘Have you come in peace?’”
Isaiah 21:5
They prepare a table, they lay out a carpet, they eat, they drink! Rise up, O princes, oil the shields!