Even though Gaven possesses the power of Undead Slaughter, which has a certain suppressive effect on these undead, he cannot occupy the Ghoul Soul Pools and make the corresponding ghouls his own soldiers.

Now he has returned to the original path and must physically eliminate them all, reverting them to a state of soul energy before Gaven can devour them bit by bit.

Moreover, many abilities that Gaven has, the Ghoul King also possesses, such as directly manipulating soul energy.

The plan he originally envisioned, with the Undead Slaughter Army advancing on one path and the underground soul energy channel on another, to quickly invade Ghoul Territory has failed.

The ghoul soul pools he occupied along the way were all empty shells without soul energy.

The only consolation is that it is now within the scope of a divine war.

The souls of those enemies slain by the Undead Allied Army, whether Jackalwere or Ghoul, will belong to the Undead Slaughter Territory as spoils of war, even if they aren’t in his occupied territory.

Similarly, if the Undead Allied Army is killed by the enemy, their souls will belong to the True Gods of the territory they were in.

"Actually, there is no need to choose other types of units. Those Super Shadows are enough to complete this task. They are shadows and can penetrate any gap, completely unrestricted by tunnels. They can fully occupy and control those ghouls and then turn to purge their own kind."

Compared to the Skeleton Dragon King, the Giant Bone King, who is skilled in infantry warfare, is clearly more concerned with the troop formation of the Undead Slaughter Legion and is knowledgeable about its composition and capabilities.

"This is indeed a good choice." Gaven affirmed the suggestion, "For now, let’s adopt this tactic, considering if I can organize more unique and efficient unit types from the Burning Flames and Bone Burning territories."

Rapid development also has its drawbacks.

Gaven only took time to complete the simplest conversions for the Burning Flames and Corpes Territories, without even conducting Godhood Enhancement, let alone integrating the troop types of the two territories. They were just used as they were.

"I’ll fight however the master wants me to fight." The Giant Bone King raised no further objections.

"I have no problems." The Skeleton Dragon King also stated.

"You now have three tasks." Gaven directly ordered, "First, build defensive fortifications on the spot and prepare for the full-scale counterattack of the Ghoul King.

Secondly, conduct a comprehensive purge of the surrounding ghoul tunnel nests, and if opportunities arise, completely destroy them.

Lastly, prepare for further integration and expansion of the Undead Slaughter Legion. The number of main battle legions will at least double."

"As you command." The two Advanced Undead Lords enthusiastically accepted the orders.

These three tasks were ones they were pleased to undertake.

It was nothing more than shrinking from full-scale war to partial war.

As long as the slaughter and plunder continued, they would have a constant harvest of Divine Nature Force.

The undead army originally scattered across three battlefields was merged into one, directly manifesting through the Skeleton Road.

Two Skeleton Roads followed behind the Giant Bone Army and the Dragon Bone Army, drawing a huge arc that combined at the Burning and Corpes Allied Army’s location.

The benefit of doing this was obvious, as it forcibly sliced off nearly a million square kilometers of territory from the Ghoul Kingdom, which is nearly half the size of the Plains of Bone.

The Ghoul King could extract all soul energy from this territory, but he couldn’t evacuate the ghouls who, after defeat, hid in the ghoul tunnels, roughly estimated to be no less than a million in number.

They basically had nowhere to run and were waiting for planned elimination.

Even the two Slaughter God Chosen wouldn’t need to be dispatched for this task, as the Shadow Officers were sufficient to handle it.

The strategic and tactical shift from comprehensive offense to strategic defense in the Undead Slaughter Territory made the Ghoul King deeply uncomfortable.

He had already mobilized all the ghouls in the Divine Kingdom of Ghouls through the hunger sacrifice of the entire Jackalwere Army, forming a literal Sea of Ghouls.

Waiting for the enemy to delve into the Divine Kingdom of Ghouls alone, utilizing his underground, surface, and aerial trinity advantage to harshly check the enemy’s momentum, making him understand that the Ghoul King is no pushover.

But now the enemy has done this.

Should he charge or hold back?

If he charges, his underground strike in the trinity attack becomes ineffectual.

The large-scale occupation of his Divine Kingdom Territory by the Defilers must have uncovered his ghoul tunnels and nests, making it impossible to leave them for his counterattack use.

In previous battles, they had already demonstrated terrifying bombardment capabilities, especially the flanking Undead Slaughter Legion.

Each one was a terrifying meat grinder specifically countering the ghouls’ favored swarm tactics.

Often, before the ghoul army even approached the enemy, it was reduced by a third in the relentless bombardment.

As ghouls are undead, they simply do not know what fear is.

Otherwise, this round alone would have been enough to rout most enemies.

If the intense ground artillery bombardment is a disaster, then the enemy’s new-type Corpse Undead, named Shadow Flyer, is a nightmare.

They have terrifying flight speed combined with formidable group assault and ground bombardment capabilities.

They are truly an integration of reconnaissance, aerial combat, and support bombing.

The only effective tactic against them is using magic like Eternal Stasis or Anti-Magic Zone, which directly restricts their ability source.