It has a very Byzantine feel - I love it. We've fought a lot with them and we've been engaged in cultural/enightenment war as well and you could clearly feel that almost Byzantine mosaic feel from that cover, it's so smoothly done, it's almost as looking at a history book condensing all things fascinating about those periods and cultures.
Finally, a good book. If you can read, or know someone who can, then get this great book which is the first book of the second trilogy by Brian McClellan about guns and powder and magic. It's $1.99 today https://www.amazon.com/gp/product/B01KT7YTV4