Sentry tower

Sentry towers, also referred to as recon-towers or sentry posts, were compact, vertically oriented structures that served as elevated observation points for both security personnel and military troops. A variety of factions made use of these towers, including the Rebel Alliance, the Galactic Empire, the Grand Army of the Republic, the Confederacy of Independent Systems, the Trade Federation, the Royal Naboo Security Forces, the Wookiees, and the Gungans.

A Wookiee sentry post The recon-towers employed by the Rebel Alliance on Yavin 4 extended far above the treetops. Rebel sentries stationed within these towers monitored both arriving and departing traffic.