You decide to take your army and maneuver so that you fall on flank of one of the enemy armies, with the other being far from threatening you, at least momentarily.
5*
The maneuver is executed brilliantly, even with Caius quickly catching up with what is happening. Your cavalry falls upon his flanks and your main force marches forth! Caius forces are out of position and for the initial engagement, you shall have the advantage.
9!*
With fury and determination befitting the most fierce of lions, your soldiers hack away the Damdamian heathens like scythe cuts down grain during harvest. The flanks are bottled down by your cavalry, whilst your pikemen and firetubers move through the central ranks of Caius' army. For every fallen Methiantese there's at least several of Damdamian corpses surrounding it!
From top of your horse you can see that the remaining enemy Army is smaller than yours, and the difference of numbers will surely be a boon to you! You press on, hoping that this will be the battle to end the war.
5*
The battle continues, your soldiers taking more and more of the battlefield from the Damdamians. Your officers point out the Damdamians banners in the rear, retreating haphazardly and leaving their more courageous compatriots still fighting.
Enemy numbers dwindle rapidly, and that's when your scouts bring ill news; the other Army is but few moments from reaching the battlefield. They've managed to arrive much sooner than anticipated.
Your officers murmur that if you decide to continue the battle, you will face more than thirty five thousand troops total, most of them well-rested and quite prepared to kill some northern heathens.
A) We cannot retreat! We must press on! I can feel the taste of victory!
B) We ought to retreat for now, lest the Damdamians drown us with numbers.