My Men: Myself, Infamous, Lem, Dru, Overlord, King, Plerp, Necros, Wacko, thu, Prom, Only, Ithe, Yianni, Luco, H_Hents, Wolf, Drac, Sauron, and March.
The Plan: Incessantly blow trumpets while flying the old Blackfyre Banners and demand a parley. Send in MarchenHope, and Luco to do the talking with Thu and King as guards. Once they are ushered inside to the keep to talk with the captain, have Thu slip away to the wall near the armory. Envoys guards are always asked to leave making this feasible. While this is going on and nearly all there men are on the walls trying to figure out whats going on, give German, Overlord, and Dru 2 men each to build ladders and a ram. Personally bring Prom and Plerp with me as we slip out of camp and make our way to the thin wall near the armory, where Thu has got to during the Parley and have him drop a rope to get us up. Hide near the inner wall till Thu reemerges from the Keep to tell us Luco and March are on the way down, use a signal to get German to attack the West wall, Dru the right, and Overlord the gate. Rush the open keep gate with Thu, Prom, Wolf, and Plerp and ambush the Captain and his guards escorting Luco and March down, take the Captain prisoner, and force him to take us to the dungeon where the prisoner is held. Emerge on the Keep battlements with the Captain and order his men to stand down, once they do, take there weapons and armor, throw then in the dungeons.
I give you not only the prisoner but the Castle as well!