Unfortunately, Moss could no longer provide him with more support: almost all the troops that could be mobilized had already been dispatched to Position No. 6.
It's crucial to understand that, in the pre-war tactics devised by Moss, the Dwarf Troops were to be kept from mobilizing whenever possible—because once mobilized, the assembled troops would become the best targets for the Tang Army.
Countless past wars have proven that once you are mobilized by the Tang Army and leave the solid defensive positions, you become passive prey, with a large number of active forces being destroyed by the Tang Army in open field combat.
Therefore, when building the Steel Rampart, Moss had already begun to avoid frequent mobilization of the dwarf's troops to keep them from entering field combat and being passively eliminated by the Tang Army.