I'm beginning to feel like a broken record here, but I've got one more bit of instructions (or requests) for the military department. We should endeavor to eradicate all Gamecatcher forces inside our territory (when they get there) in the same turn! That way, they load the save and find their forces gone without knowing how it happened or what types of units we used.
This may require great patience on our part to lure them all within our borders and within striking distance of our horsemen, warriors and archers. However, if we can prevent them from seeing our horsemen for a few more turns, so much the better.
Which brings me to this: I'd recommend that we withdraw our archers from Cha Ching as soon as possible and bring them back towards Shen Ling (which, if I were GCA, would be my next target).