Cairo was founded by the Fatimids in the 10th century. I think you can use "Memphis" as the city that is under siege?
Otherwise I find it rather surprising how successful the Monophysites were, especially given that most of the army seem to be orthodox. Granted, fanatism can make up quite a bit, but maybe you could add something that justifies the successes of fanatic light infantry against experienced heavy infantry and cavalry. The easiest way probably will be to weaken the Byzantines from within or from another foe...
Anyway, good update! Keep up the good work!
Otherwise I find it rather surprising how successful the Monophysites were, especially given that most of the army seem to be orthodox. Granted, fanatism can make up quite a bit, but maybe you could add something that justifies the successes of fanatic light infantry against experienced heavy infantry and cavalry. The easiest way probably will be to weaken the Byzantines from within or from another foe...
Anyway, good update! Keep up the good work!