If you zoom out on the map, you will get to two different levels of "overview" maps. The first level displays all players on the server with icon and name and all fortifications, if conquered including the alliance's name owning it. Also, all players and fortifications of hostile and peaceful alliances will get an according coloring.
On the second level the same is visible, minus the names. Also, only players which are members of an alliance will be displayed.
These map levels give you the opportunity to get a good overlook over the world of FORTRESS KINGS.