Three million undead soldiers surged forward across the fortress.
They marched deeper into the Bloody Mountains.
Fang Hao stood atop the city walls, watching the army as it departed.
This attack on the trolls was led by four skeleton heroes: Black Thorn, Black Sword, Giant Wall, and Heavy Arrow.
Meanwhile, the fortress was entrusted to Petty and 700,000 undead troops.
Fang Hao and Petty had a slave contract binding them.
Which made her trustworthy.
Furthermore, the fortress extended into the Bloody Mountains through only one road.
In other words, if the trolls wanted to attack the fortress, they would have to clash with Black Thorn's three million army.
The chances of them bypassing the army and directly attacking the fortress were slim.
One might even say impossible.
Nonetheless, Fang Hao left nearly 700,000 undead troops for Petty to ensure there were no surprises.