When I was The Golden Horde in campaign, a peasant rebellion occured in Livonia the year after I conquered it. So there I am in a terrible snow storm with units of Golden Horde Horse Archers against a 3200+ man army of peasants. Rather than just charge them and win I decided to practice some steppe tactics. I wanted to make the same circle around them that The Mongols used during their hunting cermonies. The Mongols made a huge circle and gradually made it tighter until The animals had no escape. Then they killed the animals. The Khan went first followed by generals, etc. So I set up my horse acrhers so they formed a complete circle with the peasants in the middle of it. It was pretty much a man-made fence for cattle. Then I let loose hoardes of arrows on them inflicting terrible casualties. As the corpses piled up, I decided to just obliterate them by tightening the circle as The Mongols did hundreds of years before. I let my general go in first and he killed a few. I was worried that the peasants would rout to early so I withdrew my general back to the circle and let my other units erase everything inside the circle. No one escaped. When I say that I mean they didn't even get a chance to run for it. They were totally surrounded and everyone died or was executed after being captured. The fighting lasted for maybe 5min. Setting up The Mongols in a circle took a while though.