watchtowers are statuary buildings that wont leave when built... they provide a large line of sight. you can also conquer a watchtower by conquering the area or standing an army near it. rebels gather around watchtowers. they can only be created in own territory

forts are forts and you can make m everywhere. your army will stay in it, and when attacked you will defend the forts, on the map. they will disband as soon as you end the turn without units in it.