To comment a bit on the prose:
A siege is a curious game. For the defender, a swift surrender promises survival without significant hardship. Though there is generally a price to pay - supplies, munitions and funds to offer as tribute - a city that surrenders without fighting is safe from devastation. A city that falls to assault, though, can only expect a sack - a bestial episode of murder, looting and ruin, which a general in such conditions can only restrict, not prevent altogether.
We have little need for more supplies, considering we have two armies worth of powder and food already. This means we can forgo tribute. Might even open up some deep operations behind the enemy lines later on, against the proper armies.
Yet if one resists, an assault could be repulsed, a siege withstood. A friendly army might come to the rescue and compel your besieger to withdraw. Von Trotha is almost certainly on his way and Daurstein knows it.
For the city's authorities, the matter is simple enough. Their duty is to their people (and their property). If there is little hope of rescue, surrender is the only rational course of action. But there are other actors, other duties. The dregs of the Army owe their loyalty to the King. To surrender without a fight would be shameful. It might kill an officer's career. For the Nornish military leadership, defiance must seem attractive - especially with von Trotha likely on the way.
Yep, surrender must be justified. There is very little chance of them holding out until Trotha, and they know it. But we have also paid quite a bit of blood, so their resistance against us is still a bargaining chip.
On any other day, you'd expect them to at least try to hold out for a short while. But today is not any other day. It is the day after the Army of the West has suffered the most devastating loss in its history and been robbed of near its entire command staff. You are moving swiftly and capitalizing on their shock and fear.
Hm, I misread their provincial status. It seems like they have a history worth mentioning, which indicates they fought in a number of wars. It might be more accurate to consider them border armies, which have fought Arné for quite some time. This triumph meant more than expected.
Daurstein is a sizeable town, squeezed in between the river and forest-brown hills which run like waves towards the east until they cross an invisible line and transition with abrupt sharpness into the black mountains of the great Markwald. The horizon in that direction is choked with rumbling storms, but they are headed away, unless the wind turns on you.
Not just a border town, but also an important location to secure travel to the Markwald. Nothing but river and hills surrounding it. Also, a shiver-inducing description of the environment.
Thanks to your maps and some of your soldiers' local knowledge, you can read the history of the town in its architecture. It's centered on a low hill and descends down its slopes like a flowing skirt. The tightly-packed nested alleys at its highest point are what remains of Daurstein's old town, which supposedly had its houses get burnt down by a dragon in the 1100s. You suspect more mundane causes are to blame, but who knows? That's ancient history.
An old Burg citing across a hill, as they often do.
The town's long since spilled past the Drachentor, in any case. Now its environs are guarded not by walls, but a series of low bastions that could catch anyone trying to march straight through in deadly enfilade. They're far from impenetrable, but without siege guns or sappers, your only option would be to scale the walls and clear them at close quarters. A nasty business, that, even in ideal conditions.
A proper set of fortification. If the 5th really wants to resist our assault, they can inflict some casualties.
In the end, they deliberate on it for four hours. The Fifth spends this time grumbling and shivering in the rain. The guns are arranged for a massed barrage against the city's defending bastions in case they refuse the terms. It would be bloody, but you have no doubt that you would overcome the enemy if it came to that.
Their envoys are a weary-eyed elven officer in an uniform still faintly stained with mud and blood alongside a gloomy dwarven burgher with silver chains hung over his broad stony chest, some kind of mark of status.
We did endear ourselves to the city, but they are the ones with the most to gain from a bloodless surrender. The western army was likely pushing against the surrender, leading to the long argument. I don't think they are bluffing on the point of the gun, they still have some discipline and reason to hold out. I don't have a strong desire for either siege or assault, the defensible position and opportunity to replenish our reserves after the battle will do us more than just 2 guns.