For the Demon Marshal to not launch an all-out attack immediately seemed like a missed opportunity to severely damage the United Army, but in actuality, it was an extremely wise decision.
The fact that several factions have become the mainstream representative forces in the Ancient God World, effectively in control of this world, is not without their own underlying strengths.
Especially the three major factions, their current influence is definitely not an accident.
The Demon Marshal clearly recognizes that relying solely on Uldaman's power, it is virtually impossible to defeat several factions. Even if they could achieve partial victories, it is certain that the ultimate winner would be the United Army of those factions.
After all, the Ancient Gods are sealed, with limited power. What needs to be done now is to accumulate strength, gradually gain capital to grow, and use the conflicts between factions to survive.