That is an excellent question, Dwibius!

*waits for an answer*
((In the meantime, and while waiting....))
Yay on the suggestion of a possible direction, but as far as the splitting up, I doubt that would be a good idea.
I did wonder at the possibility of possibly destroying the bridge leading from the keep though, that would kinda put us back at one bridge and only one side for them to attack us on, which was Aelistae's origional idea to begin with, which I thought was good 'till I remembered about that other bridge....Plus, that would require the enemy to go all the way around, and not just out of the keep, over the bridge, and right at us.
Does that make sense? And would that even be something they could get done before the hordes are upon them?