i absolutely love heavy cavalry. Ever since one battle when i was outnumbered like 3 to 1. I had about 300 men (a lot of them heavy cavalry) against about 1000 byzantines. I placed myself between a valley, my infantry in it and my cavalry on the surrounding hills, far away. The enemy army charged straight down the center and my infantry proceeded to hold them off while my cavalry hurried to the hills.

The absolute coolest thing to watch is hundreds of heavily armored royal knights charging down a steep hill into a crowd of spear-less units. The initial impact instantly mows down like 80 troops. The rest of the infantry disappear into the giant crowd of cavalry. After the chaos settles, a THICK pool of corpses remain, and the remaining remnants scatter away, some units only 1 man left in them.

Loved cavalry ever since.