If you cut off enemy’s food and other supplies, it doesn’t matter if the enemy doesn’t surrender.
In that case, you can simply overpower them when they are out of food and weak from hunger.
That way, the damage to your allies will be far less than if you fight normally.
Even at the stage when the gates are breached, the enemy has three options
- flee
- surrender
- resist.
There are two major rationalizations for the enemy to choose option 3.
The first is when they can expect early reinforcements to arrive.
A building without walls has no defense, so if you expect reinforcements within a few days at the latest, you may resist.
// The enemy and the ally are in the opposite position, but I think FE8 ch19 Last Hope is such a stage.
// At dawn, the Loston army will come to the rescue, so you can keep it until then.
The other time is when you become a discarded pawn to give the king time to escape.
If you can hold out for even a few hours, if you can get the king to flee farther, those who have sworn absolute loyalty will resist, even at the cost of their own lives.
However, FE’s castle battles are often neither.
That’s why they seem unnatural.
Most of those battles are pointless.
Even if the protagonist is young, if there is a character playing the role of a military strategist, it is unnatural not to suggest this.
On the other hand, if you look at it as a game, the maze-like castle battles in the enemy’s stronghold make the game more fun.
Bandit races to steal treasure chests hidden by the enemy entertain the player.
Besides, the final battle lays siege to the enemy and waits for 100 turns.
And a game where you have to Defeat Zephyr and Ashnard, who are ration by hungry, weak and unable to move, will not sell without appeal.