Hey Nein,
I need yr help. First thanks for telling about HA in Afghan lands, that really helped, as i went to ghurid lands with small army and always hired HA mercenaries. (Man fighting in Afghan highlands is fun, i am terrorizing ghurid army with my HA
BC map is genius.)
Now my main question. i am in year 1217, expecting mongols. i'm trying to concentrate on bridges as you suggested. I found 3 bridges: 1 in the middle of desert near Gurgench. 1 near Bukhara and 1 near Balkh.
Is there any shallow passage near any of those 3 bridges so my cav can cross when needed. I am trying to use the following tactic:
http://www.youtube.com/watch?v=mvY2iN6uP2w