Even if this was indeed the work of the undead, what could their purpose be?
Creating such a commotion just to destroy a relatively insignificant White Bamboo Principality?
"Order the five nearest honorary knight squads of the White Bamboo Principality to assemble and deploy immediately. Baluyev will serve as the commander. Set out at once to thoroughly investigate the truth of the matter!"
In the Holy Court's central archbishop's view, Baluyev was highly experienced in battle and possessed great strength. His subordinates commanded a squad of 500 Holy Paladins, along with support from four other nearby legions.
Their combined strength was more than enough to easily annihilate any medium-sized empire on the continent, and eliminating a small nation like the Kingdom of Horus would be a trivial task.
"If any undead or hostile forces are discovered, eliminate them immediately."
"Understood!"
...