Alright, write up for an alternative for 'Cautious Advance'.
Tactic: Constant Fortification
Kasgyr's cowardly tactics are designed to pull us away from our fortifications, and they are unable to breach our defenses, so the answer is obvious: We constantly build new fortifications, just ahead of our line!
With this tactic our soldiers will maintain a defensive line, however, whenever they are not being attacked, they will build a new line a little bit ahead of the current one, and when it is built up enough it becomes the new primary defensive line and all significant defensive assets (PLACEs and whatnot) are moved up to it, and the process begins anew, with the old line being recycled for materials when it becomes necessary. Due to the constant building of new fortifications, soldiers on Anti-Flanking will obviously be able to keep pace with the front line while maintaining constant coverage of the flanks. In addition, soldiers will be absolutely forbidden to chase down fleeing enemies, and to stay behind the fortifications; to only go out in front of them if it is to build new ones.
Inch by inch, foot by foot, yard by yard we will make an unstoppable, if very slow, assault on Kasgyr's forces. Even if it would only be safe to build a new line 10 yards in front of the current one then by the Bureaucracy we will build a new line 10 yards in front of the current one! There will be a point where they will have nowhere left to run but our unbreakable defensive line.
If we go with this, I recommend building a lot of BLOCKs... I think it'll need them... Good thing they're just wood huh?