The battle plan couldn't possibly be fully disclosed to all soldiers, so many orcs believed they really had lost when they pretended to flee at the beginning. With that, their formation broke, and spirits were shattered.
Non-elite troops can't feign defeat, as often a retreat would turn into a real rout.
Since when did the orcs have such a disciplined elite force? It totally contradicts their nature.
But the fact was undeniable, and the Laine People could only fight a bloody battle, barely breaking out after losing the lives of thousands of Paladins.
It was all thanks to the near berserk bravery of the Paladins, each fighting fearlessly, carving a path with Holy Slash.
After this battle, the Laine People realized the ferocity of the orcs and had no choice but to contract their forces into major cities, awaiting reinforcements.