Do we have any idea how Genghis Khan’s Mongol horde– primarily nomadic and cavalry-oriented– became masters of siegecraft?
When I think about Khan's army, I tend to think of their large and often brutal siege operations. But how did a nomadic people, with tactics centered around the horse, become adept at sieges? They are, for one thing, quite static and drawn out. And should the Mongols find themselves assaulting the walls, it would be infantry, not cavalry, who were the backbone of the operation.
Was this a learning process? Did the Mongols, for example, initially fail but become more adept with time?