Make sure you have less than 140 item types. Other than that just attack at the right time and remember to sign people up for your side. On the day of the battle we can get everyone in my TS @ ts3.thecrusadersofacre.com and make sure both sides have equal numbers.
I think best way to do the battle is have each side setup forward spawns and then once everyone is set to them have the fighting begin out in front of the castle.
For now enter Durquba (make sure you don't attack yet) and let me know when you have allowed incoming transfers and ill send over some european lances. We can have a big old game of catch with them to start things off