Fire Navy communications towers

Fire Nation Communications Towers are Fire Nation facilities that serve as communications outposts for the entire Fire Nation Navy across the Four Nations.

Function
These towers were built all across the world at isolated locations following the start of the War. It is known that dozens of these structures currently exist. These tall towers send messages to the various ships and fleets sailing across the globe, and keeps the Navy informed on battle plans or enemy attacks. This is done entirely by messenger hawks. They also serve as command centers where commanders assemble to create the plans they send out. It is unknown if any of these facilities are capable of harboring vessels, but more than likely they do.

History
During "The Southern Raiders", Zuko and Katara infiltrated one of these towers in an attempt to locate the Southern Raiders, whose leader murdered Katara's mother Kya six years before. They found plans for the unit's patrols, and eventually tracked their flagship to Whale Tail Island. This particular tower was isolated on a large, bulbous island of rock and its base was comprised of several facilities. These are probably barracks, maintenance, among other stations.