In reality, Iron Peak County is situated at the northern foot of the Golden Summit Mountain range; it is the last ripple of the mountains with uneven terrain and limited pathways suited for large-scale cavalry movements.
Based on this, Winters had his main forces deployed in three critical "throat areas," while he, himself, was stationed at [the Dagger's Wall].
The second and fourth companies, along with the militia support brigade, were stationed where the cavalry could best be deployed—because the main artery of Iron Peak County ran right through here.
...
Tie Chi and the other Terdon Nayens couldn't see what was happening on the other side of the wall.
This wall not only blocked the warhorses but also obstructed the Terdon people's line of sight, preventing them from knowing the defenders' deployment.