You accept the arms and men of the southern cities. From there, you march a bit more northernly.
807 AD, Next week
An opportunity for the combined forces to test their skills! A young nobleman, not willing to listen to offer of surrender and good treatment, is challenging the 'vile invaders from the filthy east'.
He has two thousand men, half militia, half well-trained axemen and archers. However, only a handful of horsemen, definitely his bodyguards. You therefore apply the same flanking attack you did before, as the enemy cannot counter it.
5*
Be it difference in dialects, untested chain of command or simply arguments between commanders from two kingdoms, its obvious that the initial stage of battle could've went better.
Still, the enemy is massacred and only a handful have escaped! The young nobleman's body was recovered after he perished during a last-ditch charge that failed just miserably.
807 AD, Summer
Little towns and farming hamlets surrender to your combined army, until you finally reach the walled city of Consiert, one of the biggest in Kingdom of Gon. Its governor refused to surrender, and the towers and walls are bristling with archers. No doubt hundreds or maybe thousands more defenders are within the city itself.
Further north, lies the central territory of Gon, with its capital of Gunnieva.
A) Let's split our forces, leaving some of it to besiege Consiert.
B) Let's besiege the city. We have supplies and access to more - they do not!
C) Maybe we can take the city using less honorable methods?
D) Maybe our new allies can help? Surely they have friends inside that would listen to reason?
E) This is not the city we're looking for - let's bypass it!