Battle of Oleg Keep

The current situation:

Velors forces have besieged Oleg Keep and the surrounding village of Grenvik and Oleg. Baron Dunthmore has secured himself in the Keep along with elements of the Rippers and Red Company who made sorties from the Keep to disrupt Velors forces. The two forces engaged in combat trading siege engine fire as night fell. At daybreak the undead fell back to Grenvik Bog to the south of the Keep. Both sides regrouped during the day. (while the PC’s were airship touring the area 60-90 miles to the NE) At night the undead attacked again, and as with the day before, withdrew just before dawn to the swamp. Stirkirk seeing an opportunity to take advantage of the Keeps damage and the defenders fatigue has led Burtons Irregulars in a charge to breach the south wall just after dawn.

Your rules of engagement and victory conditions:

Force: Objective: Victory: Velor’s forces: Sack the castle and kill the defenders. Take the castle (inflict 60% or more loss on defenders), or occupy the town of Oleg, and Grenvik. Baron and allies Hold the castle and immediate settlements Avoid losing 60% forces, or secure and hold the towns. PC’s + allies Take and hold the castle Inflict 40% or more loss on the Barons forces, AND eliminate Velor’s army. Independents Ensure the survival of their allies The Baron or the PC’s win. (you don't have to announce your allegiance) Spoilers Ensure the survival of their allies The Baron or the PC’s win. (you don't have to announce your allegiance)

The Flan farmers and druid allies sweep in from the north taking their anger out on the Barons lands around Oleg Keep, burning the fields and homes immediately surrounding the keep.

The Baron launches a retaliatory catapult barrage against the raiders injuring many but they return a volley of arrows that injury the defenders in kind.

Rushing in from the south to harvest the bodies, the 52nd Marauders run smack into Burtons Irregulars who have been battering down the walls since before dawn. After an afternoon of hard fighting, Burtons Irregulars suffer 30% casualties and unable to enter the fort as they thought begin to retreat in good order. Vendrix swoops in and unleashed his breath weapon, decimating the troops. Velors troops surge in to begin the body harvest, Stirkirk sensing the end is near for Burtons Irregulars orders his troops to self detonate their explosive vests rather than being turned into fresh undead troops. Rolling explosions rock the hillside.

1st Battalion of Logeth takes a beating as they hold off a three pronged brutal assault by the Death Dealers, Marauders, and Wraiths but the Dealers are routed and flee to the East.

Velors personal guard and 73rd siege battery re-consolidate their forces to the west.

1st Logeth moves to the flank and attacks the Red Company who overran the company forcing them to retreat back inside with 70% casualties.

Bonus of 60 to defenders sigil on the walls, acting on the opposing force, any loss to the defender the gateway opens.

The gnome airship moves in to take advantage of the chaos of forces scrambling to retreat into the keep. From over the railings of the sky ship the party launches spells and missiles into the massed troops a hundred and fifty feet below. They glide over and unleash an aerial bombardment on the Red Company Hornets and force them back into the fortress walls.

Hobgoblin eliminated north of town Daragon had to reatres Barbains lost two units 45th mararagedes and siege