I thought only leadership could accept/deny people to battles, but if you go to :
http://strategus.c-rpg.net/news.php and scroll down on the bottom right to Faction Battles, for upcoming battles involving my faction I can accept/deny, and remove people from the battle list. I can also edit/delete information in the "chat window" for instructions for the battle. Shouldn't only certain people in the faction (like say, rank 5 or higher) be able to do this?
Another thing to review...
Hope the issues people post are being considered by devs or this beta is pointless fodder to appease the masses.