Thanks guys, I was really worried that Palenque would flip and I'd lose the MDI Army there. I tried twice to get replacement garrison, but the Maya longbows kept cutting them off.
The victory at Uxmal probably cost 15 knights, as I was attacking with wounded units, the city was taken by a redlined knight beating a 2/3 LB. Knossos was taken when a 4/4 Pike beat a redlined MDI, I ran out of knights and won with my last unit that could reach the city.
This was great fun. We spent a lot more time in the middle ages than I thought we would. It was strange after all those past games where cavalry & tanks are about in 1500 AD to still be using knights and pikes.