Actually, the Troll army led by Prince Okamoto was not entirely devoid of elite troops.
If an army composed wholly of rookies were to march towards the North Territory after crossing thousands of miles of Ice Plain, if half the troops of this army of a hundred thousand survived, it would be a testament to Prince Okamoto's leadership skills.
For the crucial task of cutting off the Dark Cavalry's rear, Prince Okamoto had at his disposal a fairly competent army of thirty thousand, amongst which the most formidable were the three thousand Wolf Cavalry.
This was also the last Wolf Cavalry unit of the Troll Empire, if not for the less practical use of cavalry in city defense, the Troll Emperor might not have let this last precious asset be commanded by Prince Okamoto.
Facing the incoming onslaught of the Dark Cavalry, Prince Okamoto somewhat desperately dispatched the three thousand Wolf Cavalry to battle, coordinating with infantry to counter the invading Dark Cavalry.