Yes, Milan and Venice can build standards on wagons that boosts your armys morale, and the great cross on crusades functions the same way. They're not the same as the Russian war-wagons, though. I actually thought the Gulay Gorod was a joke and I'm not surprised they're not in the game... I mean, come on, Wild West-style wagon-circles? Doesn't really fit into the whole rock-paper-scissors-thing. I'd be glad to see them in an expansion or a patch, though.