Oneof my most fun battles was playing as the Byzantines. I attacked the Hungarian city of Budapest, and it was their last city. They then attacked with 3 armies, all mostly composed of spear militia, some pavise crossbow militia, and a few Hungarian Nobles, along with 5 General Bodyguards. I had a about 7 units of Vardiatori, 2 Byzantine Calvary, and I General Unit.
To make a long story, I rode continuously around them, shooting them from behind, isolating them, and then charging from behind. I finished by killing over 2,500 men, while losing about 170 Varditori, and 20 Byzantine Calvary.
The Hungarians died the next turn.