An addition to this suggestion would be for Battledawn to create an official youtube channel.
With this opens up a new role media or Spectator to which are people hand selected by the admins through applications that are trusted with the responsibility of not leaking details of what happens in the world to players in order to give one alliance the upper hand.
Videos are then recorded and uploaded with a delay of recording so that there is still surprise attacks to happen. After being recorded they get sent to the admin of said respected world for to maximize security.
Also create videos yourself, the best way for something to increase traffic besides Facebook advertising is word of mouth from the communit.
Some video ideas include:
How to - Form an alliance, Increase power level, early game tactics
World Report (Upload daily updates of what happens in the world you are in whether that be wars, teams expanding, broadcast call outs and forum talks)
Other way you could help Battledawn get more players:
Invite friends from other games you play to join you.
Teach new players the ropes and advise them to invite people they know for them to teach and lead their own team.